Wardiyah, Malahatul. “Group Positive Psychotherapy Untuk Meningkatkan Kesejahteraan Psikologis Remaja”. Psychological Journal: Science and Practice 1, no. 2 (May 30, 2013). Accessed October 6, 2024. https://ejournal.umm.ac.id/index.php/pjsp/article/view/1492.