Ronnie D. Mendoza, Teresita C. Mendoza. “Work Productivity Involvement Relative to the Organizational Citizenship Behavior and Work Engagement”. International Journal of Multidisciplinary Studies 4, no. 1 (July 31, 2022): 75–99. Accessed September 5, 2026. https://jmcfijournals.org/ijms/article/view/79.