APA (7th ed.) Citation

Constantin, E., & Schnell, A. (1990). Mass spectrometry. Ellis Horwood.

Chicago Style (17th ed.) Citation

Constantin, E., and A. Schnell. Mass Spectrometry. New York [etc.]: Ellis Horwood, 1990.

MLA (9th ed.) Citation

Constantin, E., and A. Schnell. Mass Spectrometry. Ellis Horwood, 1990.