Pratiwi, Eka Titik, and Eunice Widyanti Setyaningtyas. “Kemampuan Berpikir Kritis Siswa Melalui Model Pembelajaran Problem Based Learning Dan Model Pembelajaran Project Based Learning”. Jurnal Basicedu, vol. 4, no. 2, Mar. 2020, pp. 379-88, doi:10.31004/basicedu.v4i2.362.