Cita APA

Wallis, J. A. N. 1. (1997). Intensified systems of farming in the tropics and subtropics. Washington, D.C.: The World Bank.

Citación estilo Chicago

Wallis, J. A. Nicholas 1931-. Intensified Systems of Farming in the Tropics and Subtropics. Washington, D.C.: The World Bank, 1997.

Cita MLA

Wallis, J. A. Nicholas 1931-. Intensified Systems of Farming in the Tropics and Subtropics. Washington, D.C.: The World Bank, 1997.