Cita APA (7a ed.)
Smith, J., Umali, G., Rosegrant, M. W., & Mandac, A. M. (1989). Risk and nitrogen use on rainfed rice: Bicol, Philippines. Springer.
Cita Chicago Style (17a ed.)
Smith, Joyotee, Gloria Umali, Mark W. Rosegrant, y A. M. Mandac. Risk and Nitrogen Use on Rainfed Rice: Bicol, Philippines. Springer, 1989.
Cita MLA (9a ed.)
Smith, Joyotee, et al. Risk and Nitrogen Use on Rainfed Rice: Bicol, Philippines. Springer, 1989.
Precaución: Estas citas no son 100% exactas.