APA (7th ed.) Citation

SERNA, M. A. E., Ferrari, A. R. L., Romero, J. C., & CHOLEWA, A. F. (2001). Two new species of Mexican Iridaceae.

Chicago Style (17th ed.) Citation

SERNA, MARIO ADOLFO ESPEJO, Ana Rosa López Ferrari, Jacqueline Ceja Romero, and ANITA F. CHOLEWA. Two New Species of Mexican Iridaceae. 2001.

MLA (9th ed.) Citation

SERNA, MARIO ADOLFO ESPEJO, et al. Two New Species of Mexican Iridaceae. 2001.