Sufism: An Introduction to the Mystical Tradition of IslamMay 10 2011by Carl W. Ernst Ph.D.
Sufism: Veil and Quintessence A New Translation with Selected LettersDec 11 2006by Frithjof Schuon and James Cutsinger
Al-Ghazali's Path to SUFISM : His Deliverance from Error (al-Munqidh min al-Dalal) and Five Key TextsJan 1 2000by Abu Hamid Muhammad al-Ghazali and William A. Graham
Grand Masters of Sufism, Abdul Qadir Geylani and Ahmed er Rifai (Annotated): Secret of Secrets and Guidance to...Feb 19 2013by Es-Seyyid Es-Shaykh Taner Ansari and Muzeyyen Ansari
Sufism and Taoism: A Comparative Study of Key Philosophical ConceptsAug 6 1984by Toshihiko Izutsu
From Sufism to Ahmadiyya: A Muslim Minority Movement in South AsiaApr 6 2015by Adil Hussain Khan