R. F. Rachman and M. Khumaedi, “LEARNING USING FLIPBOOK-BASED E-MODULES TO IMPROVE LEARNING OUTCOMES OF UNDERSTANDING THE FUNCTION OF MACHINE PARTS FOR STUDENTS OF THE MACHINING ENGINEERING EXPERTISE PROGRAM CLASS XI SMK NEGERI 1 KARANGAWEN”, SJIIPS, vol. 15, no. 2, pp. 2109–2121, Jun. 2026.