Gaya APA

C., M, J, M. (2013). Ecology: concepts and applications sixth edition (sixth edition). New York: The MCGraw-Hill Companies, Inc.CRC Press.

Gaya MLA

C., Molles, Jr.,, Manuel. "Ecology: concepts and applications sixth edition". sixth edition New York: The MCGraw-Hill Companies, Inc.CRC Press, 2013. ML.