Cita APA (7a ed.)
Graham, P. H., & Harris, S. C. (1982). Biological nitrogen fixation technology for tropical agriculture: Papers presented at workshop held at CIAT, March 9-13, 1981. International Center for Tropical Agriculture.
Cita Chicago Style (17a ed.)
Graham, Peter H., y Susan C. Harris. Biological Nitrogen Fixation Technology for Tropical Agriculture: Papers Presented at Workshop Held at CIAT, March 9-13, 1981. International Center for Tropical Agriculture, 1982.
Cita MLA (9a ed.)
Graham, Peter H., y Susan C. Harris. Biological Nitrogen Fixation Technology for Tropical Agriculture: Papers Presented at Workshop Held at CIAT, March 9-13, 1981. International Center for Tropical Agriculture, 1982.
Precaución: Estas citas no son 100% exactas.