Dirgantoro, Kurnia Putri Sepdikasari, Robert Harry Soesanto, and Yanti Yanti. “Constructing Mathematical Bitterness Scale Related to Teacher Factor”. Jurnal Elemen 10, no. 2 (June 2, 2024): 395–409. Accessed February 21, 2026. https://e-journal.hamzanwadi.ac.id/index.php/jel/article/view/25508.