Cita APA (7a ed.)

Graham, P. H., & Harris, S. C. (1982). Biological nitrogen fixation technology for tropical agriculture. CIAT.

Cita Chicago Style (17a ed.)

Graham, Peter H., y Susan C. Harris. Biological Nitrogen Fixation Technology for Tropical Agriculture. Cali: CIAT, 1982.

Cita MLA (8a ed.)

Graham, Peter H., y Susan C. Harris. Biological Nitrogen Fixation Technology for Tropical Agriculture. CIAT, 1982.