APA-referens (7:e uppl.)
Aziz, M. A. (2011). Religion and mysticism in early Islam: Theology and Sufism in Yemen : the legacy of Aḥmad Ibn ʻAlwān. I.B. Tauris & Co. Ltd..
Chicago-referens (17:e uppl.)
Aziz, Muhammad Ali. Religion and Mysticism in Early Islam: Theology and Sufism in Yemen : The Legacy of Aḥmad Ibn ʻAlwān. London: I.B. Tauris & Co. Ltd., 2011.
MLA-referens (9:e uppl.)
Aziz, Muhammad Ali. Religion and Mysticism in Early Islam: Theology and Sufism in Yemen : The Legacy of Aḥmad Ibn ʻAlwān. I.B. Tauris & Co. Ltd., 2011.
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