APA aipamena

Camrbell. (1964). The oxford book of birds (4th ed.). Oxford University Press.

Chicago Style aipamena

Camrbell. The Oxford Book of Birds. 4th ed. Oxford University Press, 1964.

MLA aipamena

Camrbell. The Oxford Book of Birds. 4th ed. Oxford University Press, 1964.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.