Perry, E. L. (1950). The Presbyterian Church in metropolitan Rock Island, Ill. Board of National Missions, Presbyterian Church.
Lua i Stíl Chicago (17ú heag.)Perry, Everett L. The Presbyterian Church in Metropolitan Rock Island, Ill. New York: Board of National Missions, Presbyterian Church, 1950.
Lua MLA (8ú heag.)Perry, Everett L. The Presbyterian Church in Metropolitan Rock Island, Ill. Board of National Missions, Presbyterian Church, 1950.
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