Aninda, Alfina Dea, et al. “Membangun Keterampilan Berpikir Kritis Siswa Melalui Model Problem Based Learning Materi Ekosistem”. Jurnal Pendidikan Tambusai, vol. 7, no. 3, Oct. 2023, pp. 21208-15, doi:10.31004/jptam.v7i3.9867.