APA (7th ed.) Citation

Townsend, C. W. (1933). Sight Records of the Eskimo Curlew. The Auk, 50(2), 214.

Chicago Style (17th ed.) Citation

Townsend, Charles W. "Sight Records of the Eskimo Curlew." The Auk 50, no. 2 (1933): 214.

MLA (9th ed.) Citation

Townsend, Charles W. "Sight Records of the Eskimo Curlew." The Auk, vol. 50, no. 2, 1933, p. 214.