APA aipamena

Wallace, G. J. (1963). An introduction to ornithology (Ed.2.).

Chicago Style aipamena

Wallace, George J. An Introduction to Ornithology. Ed.2. London, The Mcmillan Company, 1963.

MLA aipamena

Wallace, George J. An Introduction to Ornithology. Ed.2. 1963.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.