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2. Anderson, Rufus. Foreign Missions: Their Relations and Claims. New York: Charles Scribner, 1869.
3. Arpee, Leon. “Armenian Paulicianism and the Key of Truth”. The American Journal of Theology (1906), 10/2: 267-285.
4. Arpee, Leon. A History of Armenian Christianity from the Beginnings to Our Own Time. New York: The Armenian Missionary Association of America, 1946.
5. Arpee, Leon. The Armenian Awakening: A History of the Armenian Church, 1820-1860. Chicago: The University of Chicago Press, 1909.