Wartchow, F., Carvalho, A.S., Sousa, M.C.A. and Cortez, V.G. 2007. Some coprophilous Psilocybe (Strophariaceae) from Pernambuco State, Northeast Brazil. SITIENTIBUS série Ciências Biológicas. 7, 2 (Jun. 2007), 150–153. DOI:https://doi.org/10.13102/scb8115.