1. For example, T. R.Gilbert , R. V.Kirss , N.Foster and G.Davies , Chemistry , 2nd edn, W. W. Norton & Comp. , New York , 2009 , ch. 10
2. K. P. C. Vollhardt and N. E.Schore , Organic Chemistry Structure and Function , 5th edn, W. H. Freeman & Comp. , New York , 2007 , ch. 8
3. J. McMurry , M. E.Castellion , D. S.Ballantine , C. A.Hoeger and V. E.Peterson , Fundamentals of General, Organic, and Biological Chemistry , 6th edn, Pearson Education , Upper Saddle River , 2009 , ch. 18
4. J. R. Holum , Fundamental of General, Organic, and Biological Chemistry , John Wiley and Sons , New York , 1998 , ch. 21
5. IUPAC. Compendium of Chemical Terminology, 2nd edn (the “Gold Book”). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. Doi: 10.1351/goldbook