Dyfyniad APA
Sundborg, G., & Gruening, E. (1946). Opportunity in Alaska: With a forew. by Ernest Gruening. Mac Millan.
Dyfyniad Arddull Chicago
Sundborg, George, and Ernest Gruening. Opportunity in Alaska: With a Forew. by Ernest Gruening. New York: Mac Millan, 1946.
Dyfyniad MLA
Sundborg, George, and Ernest Gruening. Opportunity in Alaska: With a Forew. by Ernest Gruening. Mac Millan, 1946.
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