Cita APA (7a ed.)

Sommerfeld, A. (1923). Atomic structure and spectral lines. Dutton.

Cita Chicago Style (17a ed.)

Sommerfeld, Arnold. Atomic Structure and Spectral Lines. New York: Dutton, 1923.

Cita MLA (8a ed.)

Sommerfeld, Arnold. Atomic Structure and Spectral Lines. Dutton, 1923.