Cita APA (7a ed.)
Ospina O., H. F., & Schwartz, H. F. (1981). Bean diseases caused by fungi and their control. International Center for Tropical Agriculture.
Cita Chicago Style (17a ed.)
Ospina O., Héctor Fabio, y Howard F. Schwartz. Bean Diseases Caused by Fungi and Their Control. International Center for Tropical Agriculture, 1981.
Cita MLA (9a ed.)
Ospina O., Héctor Fabio, y Howard F. Schwartz. Bean Diseases Caused by Fungi and Their Control. International Center for Tropical Agriculture, 1981.
Precaución: Estas citas no son 100% exactas.