APA (7th ed.) Citation

Roberts, B. (1939). Whaling, 1938–39. Polar Record, 3(18), 177.

Chicago Style (17th ed.) Citation

Roberts, Brian. "Whaling, 1938–39." Polar Record 3, no. 18 (1939): 177.

MLA (9th ed.) Citation

Roberts, Brian. "Whaling, 1938–39." Polar Record, vol. 3, no. 18, 1939, p. 177.