Friedrich, C. J. (1968). Constitutional government and democracy: Theory and practice in Europe and America (4th ed.). Blaisdell Pub..
Цитирование в стиле Чикаго (17-е изд.)Friedrich, Carl J. Constitutional Government and Democracy: Theory and Practice in Europe and America. 4th ed. Boston: Blaisdell Pub., 1968.
Цитирование MLA (9-е изд.)Friedrich, Carl J. Constitutional Government and Democracy: Theory and Practice in Europe and America. 4th ed. Blaisdell Pub., 1968.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.