APA (7th ed.) Citation

Twyman, F., & Smith, D. M. (1931). Wavelength tables for spectrum analysis (2d ed., 1931.). Hilger.

Chicago Style (17th ed.) Citation

Twyman, F., and Donald Murgatroyd Smith. Wavelength Tables for Spectrum Analysis. 2d ed., 1931. London: Hilger, 1931.

MLA (9th ed.) Citation

Twyman, F., and Donald Murgatroyd Smith. Wavelength Tables for Spectrum Analysis. 2d ed., 1931. Hilger, 1931.