“The Dark Side of Passion: Fanaticism, Identity, and Collective Behavior Among Indonesian Football Supporters ”. Psikostudia : Jurnal Psikologi 15, no. 4 (October 5, 2026): 689–698. Accessed October 31, 2026. https://e-journals.unmul.ac.id/index.php/PSIKO/article/view/27211.