(1959). The Northern Sea Route in 1957. Polar Record, 9(61), 337.
Chicago Style (17th ed.) Citation"The Northern Sea Route in 1957." Polar Record 9, no. 61 (1959): 337.
MLA (9th ed.) Citation"The Northern Sea Route in 1957." Polar Record, vol. 9, no. 61, 1959, p. 337.
Warning: These citations may not always be 100% accurate.