Cita APA

Smith, J. R. (1987). Tree crops: A permanent agriculture. Washington, D. C.: Island.

Citación estilo Chicago

Smith, J. Russell. Tree Crops: A Permanent Agriculture. Washington, D. C.: Island, 1987.

Cita MLA

Smith, J. Russell. Tree Crops: A Permanent Agriculture. Washington, D. C.: Island, 1987.