1. Averill, B.; Eldredge, P.Chemistry, Principles, Patterns, and Applications,1st ed.Pearson-Benjamin Cummings:San Francisco, CA, 2007; pp275–283.
2. Burdge, J.; Overby, J.Chemistry, Atoms First,1st ed.McGraw-Hill:New York, 2012; pp82–84.
3. Oxtoby, D. W.; Gillis, H. P.; Campion, A.Principles of Modern Chemistry,6th ed.Thomson-Brooks/Cole:Belmont, CA, 2008; pp167–184.
4. Brown, T. L.; LeMay, H. E., Jr.; Bursten, B. E.; Murphy, C. J.; Woodward, P. M.Chemistry, the Central Science,12th ed.Prentice Hall:Boston, MA, 2012; pp219–226.
5. Chang, R.; Goldsby, K. A.Chemistry,11th ed.McGraw-Hill:New York, 2013; pp299–303.