“Optimisme vs Pesimisme: Studi Deskriptif tentang Profil Optimisme Mahasiswa”, lentera, vol. 13, no. 1, pp. 155–162, Apr. 2020, Accessed: May 14, 2026. [Online]. Available: https://jurnal.stkippgribl.ac.id/index.php/lentera/article/view/498