Citazione Stile APA (7a Edizione)

Calhoun, D. H. (1973). The intelligence of a people. Princeton University Press.

Citazione stile Chigago Style (17a edizione)

Calhoun, Daniel Hovey. The Intelligence of a People. Princeton, N.J.: Princeton University Press, 1973.

Citatione MLA (8a ed.)

Calhoun, Daniel Hovey. The Intelligence of a People. Princeton University Press, 1973.