Utama, Radikal Yuda, Herman Palani, and Ahmad Zufar Rabbani. “Giving More Enhances Your Happiness: Evidence from Indonesia”. Communications in Humanities and Social Sciences 1, no. 1 (August 7, 2021): 24–34. Accessed December 5, 2024. https://chss.kipmi.or.id/journal/article/view/8.