Yusuf, M. (2018). Pengembangan Perangkat Pembelajaran IPA Berbasis Keterampilan Proses untuk Meningkatkan Keterampilan Berpikir Kritis Siswa SD: Development of Science Learning Tools Based on Process Skills to Improve Critical Thinking Skills for Elementary School Students. Pedagogia : Jurnal Pendidikan, 7(1), 32–46. https://doi.org/10.21070/pedagogia.v7i1.1303