Annisa Salsabilla, Utami, D., & Halengkara, L. (2020). Effectiveness of Blended Learning Model on Students Motivation and Competency Level In Meteorology Climatology Subject. Jurnal Spatial Wahana Komunikasi Dan Informasi Geografi, 20(1), 28-32. Retrieved from https://journal.unj.ac.id/unj/index.php/spatial/article/view/14333