Zwagery RV. Academic Hardiness in Students with Leukimia at SMA Terbuka Gambut. Altruistik j. Konseling dan psikol. pendidik. [Internet]. 2021 Jun. 27 [cited 2025 Jul. 31];1(1). Available from: https://jurnal.unimed.ac.id/2012/index.php/altruistik/article/view/23531