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