Guzmán, G. (2012). New taxonomical and ethnomycological observations on Psilocybe s.s. (Fungi, Basidiomycota, Agaricomycetidae, Agaricales, Strophariaceae) from Mexico, Africa and Spain. Instituto de Ecología, A.C.
Chicago-referens (17:e uppl.)Guzmán, Gastón. New Taxonomical and Ethnomycological Observations on Psilocybe S.s. (Fungi, Basidiomycota, Agaricomycetidae, Agaricales, Strophariaceae) from Mexico, Africa and Spain. Instituto de Ecología, A.C, 2012.
MLA-referens (9:e uppl.)Guzmán, Gastón. New Taxonomical and Ethnomycological Observations on Psilocybe S.s. (Fungi, Basidiomycota, Agaricomycetidae, Agaricales, Strophariaceae) from Mexico, Africa and Spain. Instituto de Ecología, A.C, 2012.