Agrawal, Ashish. “Reverse-Phase High-Performance Liquid Chromatography Estimation of Methotrexate and Tretinoin in Bulk and Pharmaceutical Dosage Forms: Reverse-Phase High-Performance Liquid Chromatography Estimation of Methotrexate and Tretinoin in Bulk and Pharmaceutical Dosage Forms”. International Journal of Pharmaceutical & Biological Archive 10, no. 02 (May 28, 2019). Accessed October 12, 2024. http://www.ijpba.info/index.php/ijpba/article/view/1790.