The cross above the crescent : the validity, necessity and urgency of missions to Moslems - Zwemer, Samuel Marinus, 1867-1952. (Grand Rapids, Mich. : Zondervan Publishing House, 1941)
"Tracts and books in Arabic [by the author]": p. 288.
"Earlier books [by the author] on Islam and missions": p. 285-287.
Keywords: Missions to Muslims