APA aipamena

 Walker, C. H. (2012).  Principles of ecotoxicology.  CRC Press.

Chicago Style aipamena

 Walker, C. H.  Principles of Ecotoxicology.  CRC Press, 2012.

MLA aipamena

 Walker, C. H.  Principles of Ecotoxicology.  CRC Press, 2012.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.