Muchtaridi, Muchtaridi, and Ester Yuliani, Iyan Sopyan. “APPLICATION OFF-LINE SPE-HPLC UV METHODS IN ANALYSIS OF OFLOXACIN IN HUMAN URINE (IN VITRO)”. International Journal of Pharmacy and Pharmaceutical Sciences, vol. 8, no. 1, Jan. 2016, pp. 255-61, https://www.journals.innovareacademics.in/index.php/ijpps/article/view/7979.