Gaya APA

Kellert, S, R. (1997). Macmillan Encyclopedia of The Environment Vol 1 (1). New York: Simon & Schuster Macmillan.

Gaya MLA

Kellert, Stephen, R.. "Macmillan Encyclopedia of The Environment Vol 1". 1 New York: Simon & Schuster Macmillan, 1997. Referensi.