- Common Groundbetween Islam and Buddhism
- Imam 'Ali From Concise History to Timeless Mystery
- Paths to Transcendence: According to Shankara, Ibn Arabi & Meister Eckhart (Spiritual Masters. East and West)
- Justice and Remembrance: Introducing the Spirituality of Imam Ali
- The Sacred Foundations of Justice in Islam: The Teachings of 'Ali ibn Abi Talib (Perennial Philosophy Series)