Wibisono, B., and R. . Prakasa Hasibuan. “DESAIN CETAKAN VACUUM FORMING UNTUK PEMBUATAN PLASTIC PACKAGING TRAY DI PT SM ENGINEERING”. Computer and Science Industrial Engineering (COMASIE), vol. 6, no. 2, Jan. 2022, pp. 94-106, https://forum.upbatam.ac.id/index.php/comasiejournal/article/view/5136.