Asadullah, ABM, Nurita Binti Juhdi, Md Nazrul Islam, Alim Al Ayub Ahmed, and ABM Abdullah. “The Effect of Reinforcement and Punishment on Employee Performance”. ABC Journal of Advanced Research 8, no. 2 (December 31, 2019): 47–58. Accessed May 17, 2024. http://i-proclaim.my/journals/index.php/abcjar/article/view/87.