APA (7th ed.) Citation
Schütz, A., Voegelin, E., Petropulos, W., Wagner, G., & Weiss, G. (2011). A friendship that lasted a lifetime: The correspondence between Alfred Schütz and Eric Voegelin. University of Missouri Press.
Chicago Style (17th ed.) Citation
Schütz, Alfred, Eric Voegelin, William Petropulos, Gerhard Wagner, and Gilbert Weiss. A Friendship That Lasted a Lifetime: The Correspondence Between Alfred Schütz and Eric Voegelin. Columbia, Mo.: University of Missouri Press, 2011.
MLA (9th ed.) Citation
Schütz, Alfred, et al. A Friendship That Lasted a Lifetime: The Correspondence Between Alfred Schütz and Eric Voegelin. University of Missouri Press, 2011.
Warning: These citations may not always be 100% accurate.