APA (7th ed.) Citation

Sommerfeld, A. (1967). Optics (1a ed.). Academic Press.

Chicago Style (17th ed.) Citation

Sommerfeld, Arnold. Optics. 1a ed. New York: Academic Press, 1967.

MLA (9th ed.) Citation

Sommerfeld, Arnold. Optics. 1a ed. Academic Press, 1967.