SIAGIAN, Corry Ester Margaret.
 TEACHING MATERIALS OF ENGLISH FOR STUDENTS OF MECHANICAL ENGINEERING OF ENGINEERING FACULTY DARMA AGUNG UNIVERSITY MEDAN- A NEED ANALYSIS ON ESP PERSPECTIVE.
<strong>Jurnal UDA</strong>, [S.l.], v. 26, n. 3, p. 620 - 627, dec. 2018.
ISSN 2654-3915.
Available at: &lt;<a href="https://www.jurnal.universitasdarmaagung.ac.id/jurnaluda/article/view/71" target="_new">https://www.jurnal.universitasdarmaagung.ac.id/jurnaluda/article/view/71</a>&gt;. Date accessed: 03 nov. 2026.
doi: <a href="http://dx.doi.org/10.46930/ojsuda.v26i3.71">http://dx.doi.org/10.46930/ojsuda.v26i3.71</a>.