Sangkong, Rosinta, Ni Suriani, and Fransiska Harahap. “PENGARUH MODEL PROBLEM BASED LEARNING TERHADAP HASIL BELAJAR SISWA PADA MATERI SISTEM PENAPASAN MANUSIA DI SMP NEGERI 3 TONDANO”. SOSCIED 8, no. 1 (May 6, 2025): 57-66. Accessed July 9, 2025. https://ejurnal.poltekstpaul.ac.id/index.php/jsoscied/article/view/914.