1. 1. History of otorhinolaryngology, Scott Stvenson and Douglas Gauthric, published by S. Livingstone Ltd - 1949.
2. 2. Microlaryngoscopy and Endolaryngeal Microsugery by O. Kleinsasser, 3rd ed;1995.
3. 3. Scott Brown's Otolaryngology, vol.1;5th ed.1987.
4. 4. Logan Turner's Diseases of the nose, Throat and ear, 10th ed.1988.
5. 5. Wilson's Diseases of Ear, Nose and Throat, London, 1962.