Schimmel, Annemarie. Mystical dimensions of Islam. - Chapel Hill, University of North Carolina Press [1975] - xxi, 506 p. illus. 25 cm. Bibliography: p. 437-467. ISBN: 0807812234 LCCN: 73016112 Subjects--Topical Terms: Sufism. LC Class. No.: BP 189.2 / .S34