Metz, D. L., & Grottenthaler, J. (1959). Church survey: Indiana county, Pennsylvania. Board of National Missions, United Presbyterian Church.
Lua i Stíl Chicago (17ú heag.)Metz, Donald L., agus Joseph Grottenthaler. Church Survey: Indiana County, Pennsylvania. New York: Board of National Missions, United Presbyterian Church, 1959.
Lua MLA (8ú heag.)Metz, Donald L., agus Joseph Grottenthaler. Church Survey: Indiana County, Pennsylvania. Board of National Missions, United Presbyterian Church, 1959.
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