Hutagalung MD. Peningkatan Hasil Belajar Pembiakan Tanaman Melalui Penerapan Model Pembelajaran Problem Based Learning (PBL) SMKN 4 Jayapura. JP3 [Internet]. 2022Feb.6 [cited 2025Jul.19];4(2). Available from: https://ejournal-jp3.com/index.php/Pendidikan/article/view/331