Gaya APA

Kellert, S, R. (1997). Macmillan encyclopedia of the environment vol. 2 (vol. 2). New York: Simon & Schuster macmillan.

Gaya MLA

Kellert, Stephen, R. "Macmillan encyclopedia of the environment vol. 2". vol. 2 New York: Simon & Schuster macmillan, 1997. .