De Ville, J. (1996). The psychology of witnessing. Ministerial Association. General Conference of Seventh-Day Adventists.
Chicago-referens (17:e uppl.)De Ville, Jard. The Psychology of Witnessing. Ministerial Association. General Conference of Seventh-Day Adventists, 1996.
MLA-referens (9:e uppl.)De Ville, Jard. The Psychology of Witnessing. Ministerial Association. General Conference of Seventh-Day Adventists, 1996.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.