Munn, Richard C. (January–March 1969). "Reviewed work(s): The Sufis by Idries Shah". Journal of the American Oriental Society. 89 (1). American Oriental Society: 279–281. doi:10.2307/598339. JSTOR598339.
Munn, Richard C. (January–March 1969). "Reviewed work(s): The Sufis by Idries Shah". Journal of the American Oriental Society. 89 (1). American Oriental Society: 279–281. doi:10.2307/598339. JSTOR598339.