Saputra, R. “PENINGKATAN HASIL BELAJAR SISWA MELALUI MODEL PROBLEM BASED LEARNING (PBL) BERBANTUAN LEMBAR KERJA PESERTA DIDIK (LKPD)”. TRIADIK, vol. 21, no. 2, Sept. 2022, pp. 108-16, doi:10.33369/triadik.v21i2.30122.