APA (7th ed.) Citation

Webster, C. C., & Wilson, P. N. (1980). Agriculture in the tropics (2. ed.). Longman.

Chicago Style (17th ed.) Citation

Webster, Cyril C., and Peter N. Wilson. Agriculture in the Tropics. 2. ed. London: Longman, 1980.

MLA (9th ed.) Citation

Webster, Cyril C., and Peter N. Wilson. Agriculture in the Tropics. 2. ed. Longman, 1980.