Schimmel, Annemarie. Mystical Dimensions of Islam. - Chapel Hill : University of North Carolina Press, 1990. - xxi, 512 p. ilus, 25 cm. Includes bibliographical references (p. 437-473). ISBN: 0807812234 0807812714 (pbk.) Subjects--Topical Terms: Sufism.Islam. LC Class. No.: BP161.2 / .S29 1994