Perry, E. L. (1950). The Presbyterian Church in metropolitan Rock Island, Ill. Board of National Missions, Presbyterian Church.
Chicago-referens (17:e uppl.)Perry, Everett L. The Presbyterian Church in Metropolitan Rock Island, Ill. New York: Board of National Missions, Presbyterian Church, 1950.
MLA-referens (8:e uppl.)Perry, Everett L. The Presbyterian Church in Metropolitan Rock Island, Ill. Board of National Missions, Presbyterian Church, 1950.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.