Παραπομπή σε μορφή APA (7η εκδ.)

Sheldon, C. (1911). The wilderness of the upper Yukon: A hunter's explorations for wild sheep in sub-arctic mountains. C. Scribner's sons.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Sheldon, Charles. The Wilderness of the Upper Yukon: A Hunter's Explorations for Wild Sheep in Sub-arctic Mountains. New York: C. Scribner's sons, 1911.

Παραπομπή σε μορφή MLA (8th εκδ.)

Sheldon, Charles. The Wilderness of the Upper Yukon: A Hunter's Explorations for Wild Sheep in Sub-arctic Mountains. C. Scribner's sons, 1911.