APA (7th ed.) Citation

Willett, G. (1917). Further Notes on the Birds of Forrester Island, Alaska. The Condor, 19(1), 15.

Chicago Style (17th ed.) Citation

Willett, George. "Further Notes on the Birds of Forrester Island, Alaska." The Condor 19, no. 1 (1917): 15.

MLA (9th ed.) Citation

Willett, George. "Further Notes on the Birds of Forrester Island, Alaska." The Condor, vol. 19, no. 1, 1917, p. 15.