Ahmad Faisal Mafahir, Rekha Ratri Julianti, dan Abdul Salam Hidayat. 2025. “The Effect of the Problem-Based Learning Model on Breaststroke Swimming Instruction for Vocational High School Students”. Jurnal Keguruan Dan Ilmu Pendidikan 12 (1). https://doi.org/10.36588/tb8bd659.