APA (7th ed.) Zitazioa

Hartwig, G. (1869). The Polar World: A popular description of Man and nature in the Arctic and Antarctic regions of the globe. By Dr. G. Hartwig. With eight chromoxylographic plates, three maps, and numerous woodcuts (1a. ed.). Longmans, Green, and Co.

Chicago Style (17th ed.) Zitazioa

Hartwig, G. The Polar World: A Popular Description of Man and Nature in the Arctic and Antarctic Regions of the Globe. By Dr. G. Hartwig. With Eight Chromoxylographic Plates, Three Maps, and Numerous Woodcuts. 1a. ed. Londres: Longmans, Green, and Co, 1869.

MLA (9th ed.) Zitazioa

Hartwig, G. The Polar World: A Popular Description of Man and Nature in the Arctic and Antarctic Regions of the Globe. By Dr. G. Hartwig. With Eight Chromoxylographic Plates, Three Maps, and Numerous Woodcuts. 1a. ed. Longmans, Green, and Co, 1869.