1. Siddiquia, M.R. , AlOthmana, Z.A. , Rahmanb, N. ; Analytical techniques in pharmaceutical analysis: A review; Arabian J. Chem., (2013; http://dx.doi.org/10.1016/j.arabjc.2013.04.016.
2. Sweetman, S. Martindale ; The complete drug reference. the Pharmaceutical Press, London, (2009, Electronic version.
3. The United States Pharmacopoeia 34, the National Formulary 29 ; the US Pharmacopoeial Convention: Rockville, MD, (2011), Vol. II, P. 2445,Vol. III, 3782–4608.
4. The British Pharmacopoeia , Her Magesty's Stationary Office: London, 2015; Vol. II, p. 475, 1195, Vol. III, p. 1223.