2021. Rasch Analysis of Creative Thinking Skill on Optical Instrument (CTSOI) 11th Grade Students Sundanese Tribe: a Case Study. Radiasi : Jurnal Berkala Pendidikan Fisika. 14, 1 (Apr. 2021), 51–61. DOI:https://doi.org/10.37729/radiasi.v14i1.1080.