APA (7th ed.) Citation

Wallis, J. A. N. (1997). Intensified systems of farming in the tropics and subtropics. World Bank.

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

Wallis, J. A. N. Intensified Systems of Farming in the Tropics and Subtropics. World Bank, 1997.