APA-referens (7:e uppl.)

Frame, D., Espejo, A., & Lopez-Ferrari, A. R. (1999). A conspectus of Mexican Melantiaceae including a description of new taxa of Schoenocaulon and Zigadenus. Instituto de Ecología, A.C.

Chicago-referens (17:e uppl.)

Frame, Dawn, Adolfo Espejo, och Ana Rosa Lopez-Ferrari. A Conspectus of Mexican Melantiaceae Including a Description of New Taxa of Schoenocaulon and Zigadenus. Instituto de Ecología, A.C, 1999.

MLA-referens (9:e uppl.)

Frame, Dawn, et al. A Conspectus of Mexican Melantiaceae Including a Description of New Taxa of Schoenocaulon and Zigadenus. Instituto de Ecología, A.C, 1999.