APA (7th ed.) Citation

Clapham, W. B. (1981). Human ecosystems. Macmillan.

Chicago Style (17th ed.) Citation

Clapham, Wentworth B. Human Ecosystems. New York: Macmillan, 1981.

MLA (9th ed.) Citation

Clapham, Wentworth B. Human Ecosystems. Macmillan, 1981.

Warning: These citations may not always be 100% accurate.