APA (7th ed.) Citation

Bagshawe, R. W., & Goldup, J. (1951). The postal history of the Antarctic, 1904–49. Polar Record, 6(41), 45.

Chicago Style (17th ed.) Citation

Bagshawe, Richard W., and John Goldup. "The Postal History of the Antarctic, 1904–49." Polar Record 6, no. 41 (1951): 45.

MLA (9th ed.) Citation

Bagshawe, Richard W., and John Goldup. "The Postal History of the Antarctic, 1904–49." Polar Record, vol. 6, no. 41, 1951, p. 45.