Clayden, J.; Greeves, N.; Warren, S.; Wothers, P. (2001). Organic Chemistry. Oxford, Oxfordshire: Oxford University Press. ISBN0-19-850346-6.
doi.org
dx.doi.org
E. Smulders, E. Sung "Laundry Detergents, 2. Ingredients and Products" in Ullmann's Encyclopedia of Industrial Chemistry, Wiley-VCH, Weinheim, 2012. doi:10.1002/14356007.o15_013