Mulyanti S, Nugroho DE, Harahap LK. Student’s Chemical Bonds Concept: Rasch Model Analysis. Int. J. Chem. Educ. Res. [Internet]. 2023 Apr. 15 [cited 2024 May 9];7(1):33-8. Available from: https://journal.uii.ac.id/IJCER/article/view/23182