Citazione Stile APA (7a Edizione)

Friedrich, C. J. (1957). Constitutional reason of state: The survival of the constitutional order. Brown University Press.

Citazione stile Chigago Style (17a edizione)

Friedrich, Carl Joachim. Constitutional Reason of State: The Survival of the Constitutional Order. Providence: Brown University Press, 1957.

Citatione MLA (9a ed.)

Friedrich, Carl Joachim. Constitutional Reason of State: The Survival of the Constitutional Order. Brown University Press, 1957.