Nofriza, Fatma, Sigit Muryono, Ulfatmi ., Ahmad Yunus, and Rifat . “The Role of Religiousness on Authentic Happiness Through the Mediator of Optimism Among Middle-Aged Female Sanitation Workers”. International Journal of Academic Research in Progressive Education and Development 13, no. 3 (July 18, 2024). Accessed November 13, 2025. https://ijarped.com/index.php/journal/article/view/2801.