APA (7th ed.) Citation

Bacher, R. F., & Goudsmit, S. (1968). Atomic energy states, as derived from the analyses of optical spectra. Greenwood Press.

Chicago Style (17th ed.) Citation

Bacher, Robert F., and Samuel Goudsmit. Atomic Energy States, as Derived from the Analyses of Optical Spectra. New York: Greenwood Press, 1968.

MLA (9th ed.) Citation

Bacher, Robert F., and Samuel Goudsmit. Atomic Energy States, as Derived from the Analyses of Optical Spectra. Greenwood Press, 1968.