Herawati, Ika, Fredi Putra, Rubhan Masykur, and Chairul Anwar. “POCKET BOOK DIGITAL BERBASIS ETNOMATEMATIKA SEBAGAI BAHAN AJAR SEKOLAH MENENGAH PERTAMA”. Journal of Mathematics Education and Science 3, no. 1 (April 30, 2020): 29-37. Accessed December 1, 2020. http://journal.unugiri.ac.id/index.php?journal=JaMES&page=article&op=view&path[]=132.