APA (7th ed.) Citation

Armstrong, T. (1958). Arctic Sea Ice Conference, Easton, Maryland, 1958. Polar Record, 9(60), 264.

Chicago Style (17th ed.) Citation

Armstrong, Terence. "Arctic Sea Ice Conference, Easton, Maryland, 1958." Polar Record 9, no. 60 (1958): 264.

MLA (9th ed.) Citation

Armstrong, Terence. "Arctic Sea Ice Conference, Easton, Maryland, 1958." Polar Record, vol. 9, no. 60, 1958, p. 264.