Atul Fahmi, Dya, et al. “Empirical Analysis of the Validity and Reliability of Creative Thinking Skills Test Instruments on Static Fluid Material for High School Students”. Kasuari: Physics Education Journal (KPEJ), vol. 9, no. 2, Aug. 2026, pp. 317-26, doi:10.37891/kpej.v9i2.1161.