Perry, E. L. (1962). Church distribution study, 1960. Board of National Missions, United Presbyterian Church.
Chicago-referens (17:e uppl.)Perry, Everett L. Church Distribution Study, 1960. New York: Board of National Missions, United Presbyterian Church, 1962.
MLA-referens (8:e uppl.)Perry, Everett L. Church Distribution Study, 1960. Board of National Missions, United Presbyterian Church, 1962.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.