Miller HR, Miller OK (2006). North American mushrooms: a field guide to edible and inedible fungi. Guilford, Conn: Falcon Guide. p. 281. ISBN0-7627-3109-5. Google Books
Bisset NG, Breksinsky A, Bresinsky A, Besl H (1990). A colour atlas of poisonous fungi: a handbook for pharmacists, doctors, and biologists. London: Wolfe Pub. p. 118. ISBN0-7234-1576-5. Google Books