Citazione Stile APA (7a Edizione)

Friedrich, C. J. (1968). Constitutional government and democracy: Theory and practice in Europe and America (4th ed.). Oxford & IBH.

Citazione stile Chigago Style (17a edizione)

Friedrich, Carl J. Constitutional Government and Democracy: Theory and Practice in Europe and America. 4th ed. Calcutta: Oxford & IBH, 1968.

Citatione MLA (9a ed.)

Friedrich, Carl J. Constitutional Government and Democracy: Theory and Practice in Europe and America. 4th ed. Oxford & IBH, 1968.