APA Style

Smith, M. (1977). An early mystic of Baghdad : the studi of the life and teaching of Harith B. Asad al-Muhasibi a.d 781-857 . London: Sheldon Press.

MLA Style

Smith, Margaret. "An early mystic of Baghdad : the studi of the life and teaching of Harith B. Asad al-Muhasibi a.d 781-857". London: Sheldon Press, 1977. Text.