“Understanding Cognitive Processes Behind ‘I Don’t Know’ Responses in Sustainability Literacy Assessment Using Eye-Tracking and Usability Evaluation”. ENERGY: JURNAL ILMIAH ILMU-ILMU TEKNIK 16, no. 2 (August 8, 2026): 431–444. Accessed August 8, 2026. https://e-journal.upm.ac.id/index.php/energy/article/view/energy.v16i2.p431-444.