Birkeland, K. B. (1926). The whalers of Akutan: An account of modern whaling in the Aleutian islands (1a. ed.). Yale University press.
Citace podle Chicago (17th ed.)Birkeland, Knut B. The Whalers of Akutan: An Account of Modern Whaling in the Aleutian Islands. 1a. ed. New Haven: Yale University press, 1926.
Citace podle MLA (9th ed.)Birkeland, Knut B. The Whalers of Akutan: An Account of Modern Whaling in the Aleutian Islands. 1a. ed. Yale University press, 1926.
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