Ermawati, Emmy. “Management Knowledge and Standard Operating Systems in Formulating Company Development Strategies”. Jurnal Ilmu Manajemen Advantage 4, no. 1 (June 30, 2020): 15–23. Accessed April 23, 2025. https://ejournal.itbwigalumajang.ac.id/index.php/adv/article/view/602.