1. I. Khan,The Bowl of Saki, Geneva: Sufi Publishing Co. Ltd, 1979.
2. F. Schuon,Understanding Islam, New York: Mandala, 1989.
3. Making and Taking Health Care Decisions: Discussion Paper
4. D. Aldridge,Suicide: The tragedy of Hopelessness, London: Jessica Kingsley, 1998.
5. T. Merton,A Search far Solitude: Pursuing the Monk's True Life, ed. Lawrence Cunningham, New York: Harper Collins, 1996.