Cita APA (7a ed.)

Johnson, R. C. (1949). An introduction to molecular spectra. Methuen.

Cita Chicago Style (17a ed.)

Johnson, Raynor C. An Introduction to Molecular Spectra. London: Methuen, 1949.

Cita MLA (9a ed.)

Johnson, Raynor C. An Introduction to Molecular Spectra. Methuen, 1949.