Kurniasih, Cicih, Evan Farhan Wahyu Puadi, and Uba Umbara. 2018. “Efforts to Improve the Ability of Connection through the Contextual Approach to Mathematic Subject”. JUMLAHKU: Jurnal Matematika Ilmiah STKIP Muhammadiyah Kuningan 4 (1), 1-11. http://jurnal.upmk.ac.id/index.php/jumlahku/article/view/299.