Mardiyyaningsih, Asriah N., et al. “Validity and Reliability of the Two-Tier Diagnostic Test to Identify Students’ Alternative Conceptions of Intermolecular Forces ”. Jurnal Penelitian Pendidikan IPA, vol. 9, no. 6, June 2023, pp. 4375-81, doi:10.29303/jppipa.v9i6.2797.