Elements of ecology

MLA

Smith, Thomas Michael, and Robert Leo Smith. Elements of Ecology. 8th ed. Menlo Park (Calif.): Benjamin/Cummings, 2012.

APA

Smith, T. Michael, & Smith, R. Leo. (2012). Elements of ecology. 8th ed. Menlo Park (Calif.): Benjamin/Cummings.

Chicago

Smith, Thomas Michael, and Robert Leo Smith. Elements of Ecology. 8th ed. Menlo Park (Calif.): Benjamin/Cummings, 2012.