Suyono, Suyono, Khurrotul Aini, and I Gusti Made Sanjaya. “The Effectiveness of The Six Tier Diagnostic Test (STDT) Instrument in Viewed from Empirical Validity to Identify Student’s Misconceptions in Chemical Equilibrium Materials”. IJORER : International Journal of Recent Educational Research 4, no. 6 (November 7, 2023): 827-836. Accessed August 3, 2025. https://journal.ia-education.com/index.php/ijorer/article/view/413.