APA (7th ed.) Citation

Armstrong, T. (1950). Study of sea ice in the Soviet Arctic, 1920–45. Polar Record, 5(39), 468.

Chicago Style (17th ed.) Citation

Armstrong, Terence. "Study of Sea Ice in the Soviet Arctic, 1920–45." Polar Record 5, no. 39 (1950): 468.

MLA (9th ed.) Citation

Armstrong, Terence. "Study of Sea Ice in the Soviet Arctic, 1920–45." Polar Record, vol. 5, no. 39, 1950, p. 468.