1.
Clayden J, Greeves N, Warren SG. Organic chemistry [Internet]. 2nd ed. Oxford: Oxford University Press; 2012. Available from: http://ebookcentral.proquest.com/lib/nottingham/detail.action?docID=1591368
2.
Stuart Warren  and Paul Wyatt. Organic Synthesis : The Disconnection Approach [Internet]. 2nd ed. John Wiley & Sons, Incorporated; 2011. Available from: https://ebookcentral.proquest.com/lib/nottingham/detail.action?docID=819215