Oktavia, N., Nurhadi, N. and Maizeli, A. (2025) “Validitas Lembar Kerja Peserta Didik Berbasis Problem Based Learning pada Materi Ekosistem Fase E SMA/MA”, Biocaster : Jurnal Kajian Biologi, 5(4), pp. 729–735. doi: 10.36312/biocaster.v5i4.664.