APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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