MASFARATNA , MASFARATNA, and AHMAD ROSADI. 2023. “PENERAPAN MODEL PROBLEM BASED LEARNING BERBANTUAN MEDIA BERBASIS WEB AN EXAMPLE OF TIME DILATION TEORI RELATIVITAS KHUSUS EINSTEIN”. Jurnal Hasil Penelitian Dan Pengembangan (JHPP) 1 (4):234-39. https://doi.org/10.61116/jhpp.v1i4.189.