Citazione Stile APA (7a Edizione)

Buchanan, W. (1988). Understanding political variables (4th ed.). Macmillan.

Citazione stile Chigago Style (17a edizione)

Buchanan, William. Understanding Political Variables. 4th ed. New York: Macmillan, 1988.

Citatione MLA (9a ed.)

Buchanan, William. Understanding Political Variables. 4th ed. Macmillan, 1988.