Voegelin, E., Hollweck, T. A., & Caringella, P. (2007). Selected correspondence, 1950 - 1984: Eric Voegelin. Translations from the German by Sandy Adler. Ed. with an introd. by Thomas A. Hollweck. Univ. of Missouri Press.

Voegelin, Eric, Thomas A. Hollweck, and Paul Caringella. Selected Correspondence, 1950 - 1984: Eric Voegelin. Translations from the German by Sandy Adler. Ed. with an Introd. by Thomas A. Hollweck. Columbia, Mo. [u.a.]: Univ. of Missouri Press, 2007.

Voegelin, Eric, et al. Selected Correspondence, 1950 - 1984: Eric Voegelin. Translations from the German by Sandy Adler. Ed. with an Introd. by Thomas A. Hollweck. Univ. of Missouri Press, 2007.