Sari, P. M., Purnamasari, I., & Baedowi, S. (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), 251–259. https://doi.org/10.23887/ijcsl.v2i4.16243