Asmawati I, Saleh S, Yusna S. Peningkatan Keaktifan dan Hasil Belajar Korespondensi melalui Penerapan Model Pembelajaran Problem Based Learning SMK Nasional Baureno Kab. Bojonegoro Jawa Timur. . JP3 [Internet]. 2022Jan.1 [cited 2025Jun.21];4(1):21-0. Available from: https://ejournal-jp3.com/index.php/Pendidikan/article/view/122