APA (7th ed.) Citation

Knight, O. W. (1896). The Pine Grosbeak in Captivity. The Auk, 13(1), 21.

Chicago Style (17th ed.) Citation

Knight, O. W. "The Pine Grosbeak in Captivity." The Auk 13, no. 1 (1896): 21.

MLA (9th ed.) Citation

Knight, O. W. "The Pine Grosbeak in Captivity." The Auk, vol. 13, no. 1, 1896, p. 21.