Amir, Sohail, Usman Mehboob, Ahsan Sethi, and Brekhna Jamil. 2022. “PROBLEM-BASED LEARNING: AN OVERVIEW OF ITS PROCESS AND IMPACT ON LEARNING”. Pakistan Journal of Physiology 18 (1):68-69. https://pjp.pps.org.pk/index.php/PJP/article/view/1381.