Khoir, N., M. Masrukan, and W. Wiyanto. “Mathematics Literacy Based on Visual-Spatial Intelligence 7th Grade Students on Discovery Learning With Performance Assessment”. Unnes Journal of Mathematics Education Research, Vol. 8, no. 1, Dec. 2018, pp. 111-7, https://journal.unnes.ac.id/sju/ujmer/article/view/27043.