1. Frequency of occurrence of cleft palates and harelips;Grace;J. D. Res,1943
2. Wisconsin cleft palate program;Phair;J. Speech Disorders,1947
3. Inheritance of Harelip and Cleft Palate;Fogh-Anderson,1942
4. Treatise on Oral Deformities;Kingsley,1880
5. The Operative Story of Cleft Palate;Dorrance,1930