1.
Manik AC, Sutrisno H, Rivaldo I. Testing the Validity and Reliability of Conceptual Chemistry Learning Instruments during the COVID-19 Pandemic Using Rasch Modeling. jppipa, pendidikan ipa, fisika, biologi, kimia [Internet]. 2022 Jul. 31 [cited 2024 Nov. 25];8(3):1561-8. Available from: https://jppipa.unram.ac.id/index.php/jppipa/article/view/1486