MURNIYATI, M.; WINARTO, W. Perbedaan Penerapan Model Project Based Learning (PjBL) dan Problem Based Learning (PBL) Ditinjau dari Pencapaian Keterampilan Proses Siswa . PSEJ (Pancasakti Science Education Journal), v. 3, n. 1, p. 25-33, 30 Apr. 2018.