Cita APA (7th ed.)
Voegelin, E., & Franz, M. (2000). The Ecumenic Age ([New ed.].). University of Missouri Press.
Cita Chicago (17th ed.)
Voegelin, Eric, i Michael Franz. The Ecumenic Age. [New ed.]. Columbia, Mo. ; London: University of Missouri Press, 2000.
Cita MLA (9th ed.)
Voegelin, Eric, i Michael Franz. The Ecumenic Age. [New ed.]. University of Missouri Press, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.