Cooper, B., & Voegelin, E. (1999). Eric Voegelin and the foundations of modern political science. University of Missouri Press.
Cita Chicago (17th ed.)Cooper, Barry, i Eric Voegelin. Eric Voegelin and the Foundations of Modern Political Science. Columbia: University of Missouri Press, 1999.
Cita MLA (9th ed.)Cooper, Barry, i Eric Voegelin. Eric Voegelin and the Foundations of Modern Political Science. University of Missouri Press, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.