APA (7th ed.) Citation

Ricklefs, R. E. (2001). The economy of nature (5th ed.). W.H. Freeman.

Chicago Style (17th ed.) Citation

Ricklefs, Robert E. The Economy of Nature. 5th ed. New York: W.H. Freeman, 2001.

MLA (8th ed.) Citation

Ricklefs, Robert E. The Economy of Nature. 5th ed. W.H. Freeman, 2001.