Suryaningsih, A., dan H. D. Koeswanti. “Perbedaan Model Pembelajaran Problem Based Learning Dan Project Based Learning Terhadap Peningkatan Kemampuan Berfikir Kritis IPA Siswa SD”. MIMBAR PGSD Undiksha, vol. 9, no. 1, April 2021, hlm. 40-48, doi:10.23887/jjpgsd.v9i1.33196.