Ikromi, Ziyadi Ali, Novi Hidayat, and Rismawati Rismawati. “The Role of Optimism in Improving Subjective Well-Being in Islamic Boarding School Students”. Priviet Social Sciences Journal 5, no. 5 (May 30, 2025): 111–121. Accessed September 2, 2025. http://www.journal.privietlab.org/index.php/PSSJ/article/view/516.