Usparianti L, Yurika, dkk. “Analysis of Physics E-LKPD Needs Based on Problem-Based Learning to Improve Students’ Critical Thinking Skills”. Jurnal Pendidikan Fisika Dan Teknologi (JPFT), vol. 9, no. 1, Juni 2023, hlm. 177-84, doi:10.29303/jpft.v9i1.5093.