Perry, E. L. (1949). A survey of Italian work in the vicinity of Easton, Pa. Board of National Missions, Presbyterian Church.
Chicago-referens (17:e uppl.)Perry, Everett L. A Survey of Italian Work in the Vicinity of Easton, Pa. New York: Board of National Missions, Presbyterian Church, 1949.
MLA-referens (8:e uppl.)Perry, Everett L. A Survey of Italian Work in the Vicinity of Easton, Pa. Board of National Missions, Presbyterian Church, 1949.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.