توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

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.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Voegelin, Eric, Thomas A. Hollweck, و 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.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

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.