Alobaidi, A., F. . Al-Salihi, and S. Tawfeq. “Problem Based Learning in Teaching Chemistry: Proposed Module for Teaching Analytical Chemistry: Problem Based Learning”. INTERNATIONAL JOURNAL OF MEDICAL SCIENCES, vol. 1, no. 3, May 2022, pp. 73-81, https://www.isnra.net/index.php/ijms/article/view/254.