Each species page at this site includes a references paragraph in small font below the mushroom's description. Here is an example from the page for Cordyceps militaris:
Complete References List
The complete list of sources I have used in order to write pages at MushroomExpert.Com is way too long to maintain as a Web page. However, the list is available as a PDF file, linked below.
Field Guides / General Interest / Beginning Mushroom Identification Sources
Arora, D. (1986). Mushrooms demystified: A comprehensive guide to the fleshy fungi. Berkeley: Ten Speed Press. 959 pp.
Barron, G. (1999). Mushrooms of northeast North America. Canada: Lone Pine. 336 pp.
Bessette, A. E., O. K. Miller, A. R. Bessette & H. H. Miller (1995). Mushrooms of North America in color: A field guide companion to seldom-illustrated fungi. China: Syracuse UP. 172 pp.
Bessette, A. E., Roody, W. C. & Bessette, A. R. (2000). North American boletes: A color guide to the fleshy pored mushrooms. China: Syracuse UP. 399 pp.
Binion, D. E., H. H. Burdsall, Jr., S. L. Stephenson, O. K. Miller, Jr., W. C. Roody & L. N. Vasilyeva (2008). Macrofungi associated with oaks of eastern North America. Morgantown, WV: West Virginia University Press. 467 pp.
Evenson, V. S. (1997). Mushrooms of Colorado and the southern Rocky Mountains. Denver: Denver Botanic Press. 207 pp.
Gilbertson, R. L. & Ryvarden, L. (1986). North American polypores Vol. I. Oslo: Fungiflora. 433 pp.
Gregory, T. R. (2008). Understanding evolutionary trees. Evolution: Education and Outreach 1: 121-137.
Gilbertson, R. L. & Ryvarden, L. (1987). North American polypores Vol. II. Oslo: Fungiflora. 452 pp.
Hansen, L. & Knudsen, H., eds. (1992). Nordic macromycetes Vol. 2: Polyporales, Boletales, Agaricales, Russulales. Copenhagen: Nordsvamp. 474 pp.
Horn, B., Kay, R., & Abel, D. (1993). A guide to Kansas mushrooms. Kansas UP. 297 pp.
Jenkins, D. T. (1986). Amanita of North America. Eureka, CA: Mad River Press. 198 pp.
Kauffman, C.H. (1918). The gilled mushrooms (Agaricaceae) of Michigan and the Great Lakes region, Volumes I and II. New York: Dover. 924 pp. (1971 Reprint.)
Kibby, G. & Fatto, R. (1990). Keys to the species of Russula in northeastern North America. Somerville, NJ: Kibby-Fatto Enterprises. 70 pp.
Kuo, M. (2005). Morels. Ann Arbor: University of Michigan Press. 205 pp.
Kuo, M. (2007). 100 Edible Mushrooms. Ann Arbor: University of Michigan Press. 329 pp.
Kuo, M. & A. Methven (2010). 100 Cool Mushrooms. Ann Arbor: University of Michigan Press. 210 pp.
Largent, D. L. (1973). How to identify mushrooms to genus I: Macroscopic features. Eureka, CA: Mad River Press. 86 pp.
Largent, D. L. & Thiers, H. D. (1973). How to identify mushrooms to genus II: Field identification of genera. Eureka, CA: Mad River Press. 32 pp.
Largent, D. L., Johnson, D. & Watling, R. (1973). How to identify mushrooms to genus III: Microscopic features. Eureka, CA: Mad River Press. 148 pp.
Largent, D. L. & Baroni, T. J. (1988). How to identify mushrooms to genus VI: Modern genera. Eureka, CA: Mad River Press. 277 pp.
Lincoff, G. H. (1992). The Audubon Society field guide to North American mushrooms. New York: Knopf. 926 pp. See also Lincoff, G. H. (1985) "A key to gilled mushrooms in the Audubon field guide." Retrieved from the Mushroom, The Journal Web site: http://www.mushroomthejournal.com/arcade/AudubonKey.pdf
Lockwood, T. F. (2002). Treasures from the kingdom of fungi. Korea: Taylor Lockwood. 127 pp.
McKnight, K. H. & McKnight, V. B. (1987). Mushrooms (Peterson Field Guides). New York: Houghton Mifflin. 429 pp.
McNeil, R. (2006). Le grand livre des champignons du Quebec et de l’est du Canada. Waterloo: Editions Michel Quintin. 575 pp.
Metzler, S. & Metzler, V. (1992). Texas mushrooms. Japan: U Texas P. 350 pp.
Miller, O. K. Jr. & Miller, H. H. (2006). North American Mushrooms: A Field Guide to Edible and Inedible Fungi. Guilford, CT: FalconGuide. 584 pp.
Moncalvo, J. M., et al. (2002). One hundred and seventeen clades of euagarics. Molecular Phylogenetics and Evolution 23: 357-400.
Money, N. P. (2002). Mr. Bloomfield's orchard: The mysterious world of mushrooms, molds, and mycologists. New York: Oxford UP. 208 pp.
Money, N. P. (2004). Carpet monsters and killer spores: A natural history of toxic mold. New York: Oxford UP. 178 pp.
Money, N. P. (2005). Why picking wild mushrooms may be bad behaviour. Mycological Research 109: 131-135.
Moser, M. (1983). Keys to Agarics and Boleti (Polyporales, Boletales, Agaricales, Russulales). Ed. Kibby, G. Transl. Plant, S. London: Roger Phillips. 535 pp.
Pacific Northwest Key Council (2006). Keys to mushrooms of the Pacific Northwest. Retrieved from the Pacific Northwest Key Council Web site: http://www.svims.ca/council/keys.htm
Phillips, R. (1981). Mushrooms and other fungi of Great Britain & Europe. London: Pan Books.
Phillips, R. (1991). Mushrooms of North America. Boston: Little, Brown and Company. 319 pp.
Phillips, R. (2006). Roger's Mushrooms. Retrieved from the World Wide Web: http://www.rogersmushrooms.com/
Preston, R. J. (1989). North American trees exclusive of Mexico and tropical Florida. Ames, IA: Iowa UP. 407 pp.
Roody, W. C. (2003). Mushrooms of West Virginia and the central Appalachians. Korea: U Kentucky P. 520 pp.
Smith, A. H. (1949). Mushrooms in their natural habitat. New York: Hafner Press. 626 pp.
Smith, A. H. (1975). The mushroom hunter's field guide. Ann Arbor: U Michigan P. 264 pp.
Smith, A. H., Smith, H. V. & Weber, N. S. (1979). How to know the gilled mushrooms. Dubuque, Iowa: Wm. C. Brown. 334 pp. (Click here to see corrections to this text.)
Smith, A. H., Smith, H. V. & Weber, N. S. (1981). How to know the non-gilled mushrooms. Dubuque, Iowa: Wm. C. Brown. 324 pp.
Smith, A. H. & Thiers, H. D. (1971). The boletes of Michigan. Ann Arbor: U Michigan P. 428 pp.
States, J. S. (1990). Mushrooms and truffles of the Southwest. Tucson: U Arizona P. 234 pp.
Stuntz, D. E. How to identify mushrooms to genus IV: Keys to families and genera. Eureka, California: Mad River Press. 94 pp. (Click here to see corrections to this text.)
Trappe, M., F. Evans & J. Trappe (2007). Field Guide to North American Truffles: Hunting, Identifying, and Enjoying the World’s Most Prized Fungi. Berkeley, CA: Ten Speed Press. 136 pp.
Trudell, S. & J. Ammirati (2009). Mushrooms of the Pacific Northwest. Portland: Timber Press. 349 pp.
Tulloss, R. E. (continuously updated). Studies in Amanitaceae. Retrieved from the World Wide Web: http://www.amanitaceae.org
Volk, T. (2006). Tom Volk's Fungi. Retrieved from the World Wide Web: http://tomvolkfungi.net
Weber, N. S. (1995). A morel hunter's companion: A guide to true and false morels. Michigan: Thunder Bay Press. 209 pp.
Weber, N. S. & Smith, A. H. (1985). A field guide to southern mushrooms. Ann Arbor: U Michigan P. 280 pp.
Wood, M. & Stevens, F. (continuously updated). The fungi of California. Retrieved from MycoWeb Web site: http://www.mykoweb.com/CAF/index.html