APA ציטוט

Gordon Wrigley. (1981). Tropical agriculture: The development of production. London: Longman.

Trích dẫn kiểu Chicago

Gordon Wrigley. Tropical Agriculture: The Development of Production. London: Longman, 1981.

ציטוט MLA

Gordon Wrigley. Tropical Agriculture: The Development of Production. London: Longman, 1981.