Citazione Stile APA (7a Edizione)

Hildebrand, W. (1974). North America: Introducing the continent. Holt, Rinehart and Winston.

Citazione stile Chigago Style (17a edizione)

Hildebrand, William. North America: Introducing the Continent. Toronto: Holt, Rinehart and Winston, 1974.

Citatione MLA (9a ed.)

Hildebrand, William. North America: Introducing the Continent. Holt, Rinehart and Winston, 1974.