Dhuhayatussyifa , N. F. . “The Enhancement of Elementary Students Learning Achievement on Three-Dimensional Shapes through Team Accelerated Instruction”. Jurnal Inovasi Pendidikan Dasar, vol. 3, no. 1, Nov. 2017, pp. 15-22, https://journal.uhamka.ac.id/index.php/jipd/article/view/8629.