., Pujianto, and Janelle L. Juneau. 2017. “IMPLEMENTATION OF PROBLEM-BASED INSTRUCTION LEARNING MODEL USING MEDIA KOTAK DAN KARTU MISTERI TO IMPROVE STUDENT LEARNING OUTCOMES”. JURNAL HANDAYANI PGSD FIP UNIMED 7 (2):137-41. https://doi.org/10.24114/jh.v7i2.7245.