Atkins, P.W., De Paula, J. and Keeler, J. (2023) Atkins’ Physical chemistry. Twelfth edition. Oxford: Oxford University Press.
Hollas, J.M. and MyiLibrary (2004) Modern spectroscopy. 4th ed. Chichester: John Wiley & Sons. Available at: https://ebookcentral.proquest.com/lib/nottingham/detail.action?docID=219771.