Perdana, Iwan, Rosnah binti Ishak, and Mahaliza binti Mansor. “What External Aspect of Motivation Has the Greatest Influence: Survey Research on Herzberg’s Theory”. Advances In Social Humanities Research 2, no. 6 (June 11, 2024): 840–848. Accessed August 11, 2026. https://adshr.org/index.php/vo/article/view/254.