Cita APA

Smith, R. L., & Smith, T. M. 1. (2003). Elements of ecology (5. edition.). San Francisco: Benjamin Cummings.

Citación estilo Chicago

Smith, Robert Leo, y Thomas Michael 1955- Smith. Elements of Ecology. 5. edition. San Francisco: Benjamin Cummings, 2003.

Cita MLA

Smith, Robert Leo, y Thomas Michael 1955- Smith. Elements of Ecology. 5. edition. San Francisco: Benjamin Cummings, 2003.