APA aipamena

 Smith, T. M. (2009).  Elements of ecology.  Pearson Benjamin Cummings.

Chicago Style aipamena

 Smith, Thomas M.  Elements of Ecology.  Pearson Benjamin Cummings, 2009.

MLA aipamena

 Smith, Thomas M.  Elements of Ecology.  Pearson Benjamin Cummings, 2009.