APA (7th ed.) Citation

Sommer, R. F., Ostrander, F. D., & Crowley, M. C. (1961). Clinical endodontics; a manual of scientific endodontics. Saunders.

Chicago Style (17th ed.) Citation

Sommer, Ralph Frederick, F. Darl Ostrander, and Mary C. Crowley. Clinical Endodontics; a Manual of Scientific Endodontics. Philadelphia: Saunders, 1961.

MLA (9th ed.) Citation

Sommer, Ralph Frederick, et al. Clinical Endodontics; a Manual of Scientific Endodontics. Saunders, 1961.