Cita APA (7a ed.)

International Institute of Tropical Agriculture. Symposium (1975 : Ibadan, Nigeria), Ayanaba, A., & Dart, P. (1977). BIOLOGICAL nitrogen fixation in farming systems of the tropics. J. Wiley.

Cita Chicago Style (17a ed.)

International Institute of Tropical Agriculture. Symposium (1975 : Ibadan, Nigeria), A. Ayanaba, y P.J Dart. BIOLOGICAL Nitrogen Fixation in Farming Systems of the Tropics. Chichester: J. Wiley, 1977.

Cita MLA (8a ed.)

International Institute of Tropical Agriculture. Symposium (1975 : Ibadan, Nigeria), et al. BIOLOGICAL Nitrogen Fixation in Farming Systems of the Tropics. J. Wiley, 1977.