Cita APA (7a ed.)

Smith, T. M. (2015). Elements of ecology (Ninth edition.). Pearson.

Cita Chicago Style (17a ed.)

Smith, T. M. Elements of Ecology. Ninth edition. San Francisco: Pearson, 2015.

Cita MLA (9a ed.)

Smith, T. M. Elements of Ecology. Ninth edition. Pearson, 2015.