NINGSIH, Siska Candra.
 Pengembangan Student Worksheet Berbahasa Inggris dengan Pendekatan Problem Based Learning Pada Mata Kuliah Matematika Diskrit.
<strong>Journal of Medives : Journal of Mathematics Education IKIP Veteran Semarang</strong>, [S.l.], v. 3, n. 1, p. 65-74, jan. 2019.
ISSN 2549-5070.
Available at: &lt;<a href="https://www.e-journal.ivet.ac.id/index.php/matematika/article/view/701" target="_new">https://www.e-journal.ivet.ac.id/index.php/matematika/article/view/701</a>&gt;. Date accessed: 08 oct. 2025.
doi: <a href="https://doi.org/10.31331/medivesveteran.v3i1.701">https://doi.org/10.31331/medivesveteran.v3i1.701</a>.