Cita APA (7a ed.)

Singh, R. P., Parr, J. F., & Stewart, B. A. (1990). Dryland agriculture strategies for sustainability. Springer-Verlag.

Cita Chicago Style (17a ed.)

Singh, R. Paul, J. F. Parr, y Bobby A. Stewart. Dryland Agriculture Strategies for Sustainability. New York: Springer-Verlag, 1990.

Cita MLA (8a ed.)

Singh, R. Paul, et al. Dryland Agriculture Strategies for Sustainability. Springer-Verlag, 1990.