Atkins, P. W., Julio De Paula, and James Keeler. 2023. Atkins’ Physical Chemistry. Twelfth edition. Oxford: Oxford University Press.
Hollas, J. Michael and MyiLibrary. 2004. Modern Spectroscopy. 4th ed. Chichester: John Wiley & Sons. https://ebookcentral.proquest.com/lib/nottingham/detail.action?docID=219771.