Penn, M. P. (2005). Kissing Christians: Ritual and community in the late ancient church. University of Pennsylvania Press.
Chicago-referens (17:e uppl.)Penn, Michael Philip. Kissing Christians: Ritual and Community in the Late Ancient Church. Philadelphia: University of Pennsylvania Press, 2005.
MLA-referens (8:e uppl.)Penn, Michael Philip. Kissing Christians: Ritual and Community in the Late Ancient Church. University of Pennsylvania Press, 2005.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.