National University of Singapore, http://www.chemistry.nus.edu.sg/2500/soap2.htm
Kevin M. Dunn, http://cavemanchemistry.com/scisoap.html Updated: 2005/08/24
U. S. Food and Drug Administration Center for Food Safety and Applied Nutrition Office of Cosmetics and Colors Fact Sheet February 3, 1995 http://vm.cfsan.fda.gov/~dms/cos-215.html
The soap and detergent association http://vm.cfsan.fda.gov/~dms/cos-215.html Last Updated 6-15-99
Gregory Earl Webb, Masters in Chemical Engineering specializing in cleaning systems and chemicals http://www.madsci.org/posts/archives/oct99/938787346.Ch.r.html Thu Sep 30 22:07:31 1999
Copyright � 1999 - 2007, Christopher S. Swingley http://www.frontier.iarc.uaf.edu:8080/~cswingle/misc/soap.phtml
James Hershberger, A Chemical Engineer
http://waltonfeed.com/old/soap/soapchem.html