Citazione Stile APA (7a Edizione)

Gould, L. M. (1958). The Polar regions in their relation to human affairs. The American Geographical Society.

Citazione stile Chigago Style (17a edizione)

Gould, Laurence M. The Polar Regions in Their Relation to Human Affairs. New York: The American Geographical Society, 1958.

Citatione MLA (9a ed.)

Gould, Laurence M. The Polar Regions in Their Relation to Human Affairs. The American Geographical Society, 1958.