Hapsari, Melati Indri, Ani Rusilowati, and Nina Oktarina. “Development And Validity-Reliability Testing Of An Early Childhood Education Institution Performance Instrument Based On A Psychometric Approach”. Proceedings of International Conference on Science, Education, and Technology 12, no. 1 (August 6, 2026): 139–147. Accessed September 28, 2026. https://proceeding.unnes.ac.id/ISET/article/view/5394.