APA aipamena

(2005). McDougal Littell life science. McDougal, Littell.

Chicago Style aipamena

McDougal Littell Life Science. Evanston, Ill: McDougal, Littell, 2005.

MLA aipamena

McDougal Littell Life Science. McDougal, Littell, 2005.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.