1. 1. A. Samad, M. Ahmadand Z. Latif."Bezoars: a review and report of two cases, " Journal of the College of Physicians and Surgeons Pakistan, vol. 7, no. 6, pp. 263-265, 1997.
2. 2. S. Khattak and K. Asghar."Trichobezoar, " Gomal Journal of Medical Sciences, vol.2, no. 1, pp. 25-26, 2004.
3. 3. M. E. Rabie, A. R. Arishi, A. Khan, H. Ageely, G. A. S. El-Nasrand M. Fagihi."Rapunzel syndrome: the unsuspected culprit, " World Journal of Gastroenterology, vol. 14, no. 7, pp. 1141-1143, 2008
4. 4. American Psychiatric Association, Diagnostic and Statistical Manual of Mental Disorders.American Psychiatric Association, Washington, DC, USA, 4th edition, 2000.
5. 5. G. A.Christenson and S. J. Crow."The characterization and treatment of Trichotillomania, "Journal of Clinical Psychiatry, vol. 57, no. 8, pp. 42-49, 1996