Citazione Stile APA (7a Edizione)

Crickmer, R. E., & Hildebrand, W. (1972). The United States. Holt, Rinehart and Winston.

Citazione stile Chigago Style (17a edizione)

Crickmer, Robin E., e William Hildebrand. The United States. Toronto: Holt, Rinehart and Winston, 1972.

Citatione MLA (9a ed.)

Crickmer, Robin E., e William Hildebrand. The United States. Holt, Rinehart and Winston, 1972.