Sari, Peni Mardiana, Iin Purnamasari, and Sunan Baedowi. 2018. “Pengaruh Metode Problem Based Learning Berbantu Media Puzzle Bangun Datar 3 Dimensi Terhadap Kemamuan Pemechan Masalah”. International Journal of Community Service Learning 2 (4):251-59. https://doi.org/10.23887/ijcsl.v2i4.16243.