OKTAVIA, N.; NURHADI, N.; MAIZELI, A. Validitas Lembar Kerja Peserta Didik Berbasis Problem Based Learning pada Materi Ekosistem Fase E SMA/MA. Biocaster : Jurnal Kajian Biologi, [S. l.], v. 5, n. 4, p. 729–735, 2025. DOI: 10.36312/biocaster.v5i4.664. Disponível em: https://e-journal.lp3kamandanu.com/index.php/biocaster/article/view/664. Acesso em: 25 jan. 2026.