M. Irfan, Harahap, A. S., Khairul Usman, Hariadi, & Hasibuan, M. N. (2023). PROTOTIPE INDUSTRI OLAHRAGA EDU ORTRAD UNIMED. Bina Guna Press, 1-64. Retrieved from https://jurnal.stokbinaguna.ac.id/index.php/BGP/article/view/1387