Khalaf F Al Samarrai, Eman Thiab A Al Samarrai and Baidaa Adnan Al Samarrai (2019) “Spectrophotometric determination of methyldopa in pharmaceutical preparation via ion pair formation”, International Journal of Research in Pharmaceutical Sciences, 10(2), pp. 1367-1371. doi: 10.26452/ijrps.v10i2.542.