R. E. Bachtiar, Dwi Widjanarko, Khoirul Huda, and Kriswanto, “DEVELOPMENT OF MANUFACTURING ENGINEERING DRAWING LEARNING E-MODULES TO IMPROVE STUDENTS’ BASIC UNDERSTANDING OF 3D DRAWING MATERIALS MACHINING ENGINEERING EXPERTISE PROGRAM”, SJIIPS, vol. 15, no. 3, pp. 1782–1791, Oct. 2026.