Cita APA

Mellor, J. W. 1., & Mellor, J. W. 1. (1990). Issues in world agriculture a U.S. perspective. Washington.

Citación estilo Chicago

Mellor, John Williams 1928-, y John Williams 1928- Mellor. Issues in World Agriculture a U.S. Perspective. Washington, 1990.

Cita MLA

Mellor, John Williams 1928-, y John Williams 1928- Mellor. Issues in World Agriculture a U.S. Perspective. Washington, 1990.