Cita APA

Kelch, D. R., & Kelch, D. R. (1982). Structural and commodity policies of spanish agriculture. Washington.

Citación estilo Chicago

Kelch, David R., y David R. Kelch. Structural and Commodity Policies of Spanish Agriculture. Washington, 1982.

Cita MLA

Kelch, David R., y David R. Kelch. Structural and Commodity Policies of Spanish Agriculture. Washington, 1982.