1. Speech After Laryngectomy;Di Carlo,1956
2. Voice and Speech Disorders: Medical Aspects;Levin,1962
3. Speech Rehabilitation of the Laryngectomized;Snidecor,1962
4. An investigation of speech after laryngectomy;Diedrich,1962
5. Lectures at the Sixth Postgraduate Course in Disorders of Voice and Speech and Esophageal Speech;Levin,1960