APA (7th ed.) Citation

Winfield, R. H. (1947). The Royal Air Force North Polar Research Flights, 1945. Polar Record, 5(33-34), 6.

Chicago Style (17th ed.) Citation

Winfield, R. H. "The Royal Air Force North Polar Research Flights, 1945." Polar Record 5, no. 33-34 (1947): 6.

MLA (9th ed.) Citation

Winfield, R. H. "The Royal Air Force North Polar Research Flights, 1945." Polar Record, vol. 5, no. 33-34, 1947, p. 6.