APA (7th ed.) Citation

Armstrong, T. (1962). The population of the north of the USSR. Polar Record, 11(71), 172.

Chicago Style (17th ed.) Citation

Armstrong, Terence. "The Population of the North of the USSR." Polar Record 11, no. 71 (1962): 172.

MLA (9th ed.) Citation

Armstrong, Terence. "The Population of the North of the USSR." Polar Record, vol. 11, no. 71, 1962, p. 172.