APA (7th ed.) Citation

Ricklefs, R. E. (1997). The economy of nature: A textbook of basic ecology (4. ed.). Freeman.

Chicago Style (17th ed.) Citation

Ricklefs, Robert E. The Economy of Nature: A Textbook of Basic Ecology. 4. ed. New York: Freeman, 1997.

MLA (9th ed.) Citation

Ricklefs, Robert E. The Economy of Nature: A Textbook of Basic Ecology. 4. ed. Freeman, 1997.