1. Sicher's Oral Anatomy;DuBrul,1980
2. Anatomy: vol 1, Head and Neck;Pernkopf,1989
3. Lines of the pharynx;Rubesin;RadioGraphics,1987
4. Anatomy of the pharynx, pertinent to swallowing;Bosma;Dysphagia,1986
5. The physiology of swallowing;Dodds;Dysphagia,1989