Handika, Dony, et al. “Pengaruh Model Project Based Learning Dan Problem Based Learnng Untuk Meningkatkan Hasil Belajar Siswa”. Jurnal Educatio FKIP UNMA, vol. 7, no. 4, Oct. 2021, pp. 1544-50, doi:10.31949/educatio.v7i4.1449.