Zahid, Lubna, and Amna Umer Cheema. “An Investigation of the Impact of Positive and Negative Reinforcement in Motivating Student’s Learning”. Pakistan Languages and Humanities Review 7, no. 2 (June 30, 2023): 913–923. Accessed July 22, 2024. https://ojs.plhr.org.pk/journal/article/view/833.