APA (7th ed.) Citation

Townsend, C. W. (1906). Notes on the Birds of Cape Breton Island. The Auk, 23(2), 172.

Chicago Style (17th ed.) Citation

Townsend, Charles W. "Notes on the Birds of Cape Breton Island." The Auk 23, no. 2 (1906): 172.

MLA (9th ed.) Citation

Townsend, Charles W. "Notes on the Birds of Cape Breton Island." The Auk, vol. 23, no. 2, 1906, p. 172.