Hariyanto S, Suyitno S. Peningkatan Keaktifan dan Hasil Belajar Siswa Mata Pelajaran Chasis Melalui Model Pembelajaran PBL (Problem Based Learning) di SMK PN Purworejo. autotech [Internet]. 2019Jan.31 [cited 2024Nov.23];14(1):58-7. Available from: https://ebook.umpwr.ac.id/index.php/autotech/article/view/536