Ningsih, Sri Nurfadillah, Edi Istiyono, and Widihastuti. “An Application of Classical Test Theory for Item Characteristic Analysis of Chemical Literacy Instruments”. Jurnal Pendidikan Kimia Indonesia 7, no. 2 (February 15, 2024): 58–68. Accessed April 3, 2025. https://ejournal.undiksha.ac.id./index.php/JPK/article/view/68983.