APA (7th ed.) Zitazioa

WEBSTER, C. (1966). Agriculture in the tropics. The English Language Book Society and Longman.

Chicago Style (17th ed.) Zitazioa

WEBSTER, C.C. Agriculture in the Tropics. London: The English Language Book Society and Longman, 1966.

MLA (9th ed.) Zitazioa

WEBSTER, C.C. Agriculture in the Tropics. The English Language Book Society and Longman, 1966.