APA (7th ed.) Citation

Pettingill, O. S. (1971). Ornithology: In laboratory and field (4.ed.,2.print.). Burgess.

Chicago Style (17th ed.) Citation

Pettingill, Olin S. Ornithology: In Laboratory and Field. 4.ed.,2.print. Minneapolis, Minn: Burgess, 1971.

MLA (9th ed.) Citation

Pettingill, Olin S. Ornithology: In Laboratory and Field. 4.ed.,2.print. Burgess, 1971.