Khulliyah, K., & Fadlan, A. (2019). Penguasaan Konsep dan Retensi melalui Pogil (Process Oriented Guided Inquiry Learning) Bermuatan Multiple Level Representation. Journal of Educational Chemistry (JEC), 1(1), 36-43. doi:https://doi.org/10.21580/jec.2019.1.1.3942