1. Falbe, J, and, Regitz, M. (Eds.), Römpp Chemie Lexikon, Vol, 6, T–Z, Georg Thieme Verlag, Stuttgart, 1995.
2. Jungermann, E, Cationic Surfactants, Surfactant Science Series, Vol, 4, Marcel Dekker, New York, 1970.
3. Cross, J, and, Singer, E. J, Cationic Surfactants: Analytical and Biological Evaluation, Surfactant Science Series, Vol, 53, Marcel Dekker, New York, 1994.