1. Evolution of the mammalian middle ear
2. and 1973 Surgical Anatomy of the Temporal Bone and Ear. Second Ed. Saunders, Philadelphia.
3. 1937 The Development of the Vertebrate Skull. Oxford University Press, London and New York.
4. and 1975 Textbook of Histology. Tenth ed. Saunders, Philadelphia.
5. Eustachian Tube And Middle Ear: Embryology and Pathology