1. Oral Roentgenographic Diagnosis;Stafne,1963
2. Nasopalatine Duct Structures and Peculiar Bony Patterns Observed in Anterior Maxillary Region;Burket;Arch. Path,1937
3. The Differential Diagnosis of Radiolucent Areas in the Jaws;Waldron,1964
4. Textbook of Oral Pathology;Shafer,1963
5. Textbook of Oral Surgery;Archer,1956