Salsabila, F. N., & Ermawati, F. U. (2020). Validity and Reliability of Conception Diagnostic Test Using Five-Tier Format for Elasticity Concepts. IPF: Inovasi Pendidikan Fisika, 9(3), 439–446. Retrieved from https://ejournal.unesa.ac.id/index.php/inovasi-pendidikan-fisika/article/view/35747