Wulandari, Antonia P. J., and Astrini Astrini. “The Role of Religion and Citizenship Courses in Promoting Hardiness, Competitiveness, and Dynamic Characters Among High School Students”. Jurnal Psikologi Ulayat 1, no. 2 (June 15, 2020): 223–234. Accessed March 14, 2025. https://publication.k-pin.org/index.php/jpu/article/view/14.