Ahmad Faisal Mafahir, Rekha Ratri Julianti, Abdul Salam Hidayat. The Effect of the Problem-Based Learning Model on Breaststroke Swimming Instruction for Vocational High School Students. Magistra [Internet]. 17 Oktober 2025 [dikutip 23 Oktober 2025];12(1). Tersedia pada: https://journalmagistra.org/index.php/magistra/article/view/56