Maya Kusuma, S. B., S. Budi Waluya, and M. Masrukan. “The Mathematical Literacy of Vocational Students in Discovery Learning Using E-Worksheet”. Unnes Journal of Mathematics Education Research, Vol. 10, no. A, Jan. 2021, pp. 1-8, https://journal.unnes.ac.id/sju/ujmer/article/view/43831.