Clayden, Jonathan, Nick Greeves, and Stuart G. Warren. 2012. Organic Chemistry. 2nd ed. Oxford: Oxford University Press. http://ebookcentral.proquest.com/lib/nottingham/detail.action?docID=1591368.
Stuart Warren  and Paul Wyatt. 2011. Organic Synthesis : The Disconnection Approach. 2nd ed. John Wiley & Sons, Incorporated. https://ebookcentral.proquest.com/lib/nottingham/detail.action?docID=819215.