Heirs of the prophets;
an account of the clergy and priests of Islam,
Zwemer, S. Marinus. (1946). Heirs of the prophets: an account of the clergy and priests of Islam. [Chicago: Moody press.
Zwemer, Samuel Marinus, 1867-1952. Heirs of the Prophets: an Account of the Clergy And Priests of Islam. [Chicago: Moody press, 1946.
Warning: These citations may not always be complete (especially for serials).