APA aipamena

Robert E Ricklefs. (1990). Ecology. New York: W. H. Freeman.

Chicago Style aipamena

Robert E Ricklefs. Ecology. New York: W. H. Freeman, 1990.

MLA aipamena

Robert E Ricklefs. Ecology. New York: W. H. Freeman, 1990.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.