al- Fikr aš-šīʿī wa-'n-nazaʿāt aṣ-ṣūfīya ḥattā maṭlaʿ al-qarn aṯ-ṯāmī ʿašar al-hiǧrī = Shī'ite thought and ṣūfī trends to Early 12th Century A.H. - Šaibī, Kāmil Muṣṭafā aš- 1927-2006 (1966)