Nurzakiyah, E., G. A. N. Assyifaa, I. Kaniawati, and I. R. Suwarma. “Development of Questionnaire on Students’ Perceptions of STEM and Problem-Solving (SPSP): A Rasch Modelling Approach”. Radiasi : Jurnal Berkala Pendidikan Fisika, Vol. 14, no. 1, Apr. 2021, pp. 34-43, doi:10.37729/radiasi.v14i1.1078.