Citazione Stile APA (7a Edizione)

Boasson, C. (1972). Approaches to the study of international relations (2d ed.). Van Gorcum.

Citazione stile Chigago Style (17a edizione)

Boasson, Charles. Approaches to the Study of International Relations. 2d ed. Assen: Van Gorcum, 1972.

Citatione MLA (8a ed.)

Boasson, Charles. Approaches to the Study of International Relations. 2d ed. Van Gorcum, 1972.