Ronnie D. Mendoza, Teresita C. Mendoza, “Work Productivity Involvement Relative to the Organizational Citizenship Behavior and Work Engagement”, Int J Multidis Stud, vol. 4, no. 1, pp. 75–99, Jul. 2022, Accessed: Dec. 29, 2025. [Online]. Available: https://www.jmcfijournals.org/index.php/ijms/article/view/79