The Sufi Message of Hazrat Inayat Khan: The Mysticism of Sound, Music, The Power of the Word, Cosmic Language
2023
The Sufi Message of Hazrat Inayat Khan: Healing, Mental Purification and the Mind World
2023
The Sufi Message of Hazrat Inayat Khan: The Way of Illumination
2023
Der Tanz der Seele
2012
Aqibat: Life After Death
2023
The Inner Life
1997