1. Guidelines for drinking water quality, second ed., vol. 1, Recommendations in World Health Organisation, Geneva, 1993, pp. 74–75.
2. Edetic Acid Monograph 1612 European Pharmacopoeia fourth ed., Council of Europe, Strasbourg, France, 2001.
3. Edetate calcium disodium United States Pharmacopoeia 24, United States Pharmacopoeial Convention, Rockville, MD, USA, 2000, pp. 622.
4. Edetate disodium p 622 Ibid.
5. Edetic acid, National Formularly 19, United States Pharmacopoeial Convention, Rockville, MD, USA, 2000.