Key concepts in the practice of Sufism : emerald hills of the heart - Gulen, Fethullah; Unal, Ali. (Somerset, N.J. : Light, 2006)
Vol. 1 originally published as a single volume manifestation withoug subtitle. Vol. 3-4 published: Somerset, N.J. : Tughra Books.
Includes bibliographical references and indexes.
Keywords: Sufism -- Doctrines