Citazione Stile APA (7a Edizione)

Perkins, D. (1952). The American approach to foreing policy. Harvard University.

Citazione stile Chigago Style (17a edizione)

Perkins, Dexter. The American Approach to Foreing Policy. Cambridge, Massachussetts: Harvard University, 1952.

Citatione MLA (9a ed.)

Perkins, Dexter. The American Approach to Foreing Policy. Harvard University, 1952.