APA (7th ed.) Citation

Sommerfeld, A., Laporte, O., & Moldauer, P. A. (1964). Optics. Academic Press.

Chicago Style (17th ed.) Citation

Sommerfeld, Arnold, Otto Laporte, and Peter A. Moldauer. Optics. New York [etc.]: Academic Press, 1964.

MLA (9th ed.) Citation

Sommerfeld, Arnold, et al. Optics. Academic Press, 1964.