APA (7th ed.) Citation

Poole, E. L. (1933). A Pennsylvania Specimen of the White Gyrfalcon. The Auk, 50(1), 97.

Chicago Style (17th ed.) Citation

Poole, Earl L. "A Pennsylvania Specimen of the White Gyrfalcon." The Auk 50, no. 1 (1933): 97.

MLA (9th ed.) Citation

Poole, Earl L. "A Pennsylvania Specimen of the White Gyrfalcon." The Auk, vol. 50, no. 1, 1933, p. 97.