Citazione Stile APA (7a Edizione)

Haas, W. H. (1940). The American empire: A study of the outlying territories of the United States. The University of Chicago Press.

Citazione stile Chigago Style (17a edizione)

Haas, William Herman. The American Empire: A Study of the Outlying Territories of the United States. Chicago, Ill: The University of Chicago Press, 1940.

Citatione MLA (9a ed.)

Haas, William Herman. The American Empire: A Study of the Outlying Territories of the United States. The University of Chicago Press, 1940.