APA (7th ed.) Citation

Boumans, P. W. J. M. (1966). Theory of spectrochemical excitations. Hilger and Watts.

Chicago Style (17th ed.) Citation

Boumans, Paul W. J. M. Theory of Spectrochemical Excitations. London: Hilger and Watts, 1966.

MLA (9th ed.) Citation

Boumans, Paul W. J. M. Theory of Spectrochemical Excitations. Hilger and Watts, 1966.