Saputra, Fahrul, Djaelani, Aunu, AND Setiawan, Toni. " PENINGKATAN HASIL BELAJAR CARA KERJA ENGINE 2 DAN 4 LANGKAH MELALUI MODEL PROBLEM BASED LEARNING DENGAN ANIMASI PADA SISWA" Journal of Vocational Education and Automotive Technology [Online], Volume 2 Number 1 (30 April 2020)