Hulu, F. N., Yadi, I., Zumhari, Z., & Novalianda, S. (2022). A MANAGEMENT QUALITY SIGNAL DETECTION USING OPEN SIGNAL APPLICATION AT SEVERAL POINT LOCATIONS IN MEDAN CITY. Jurnal Ekonomi, 11(03), 1087–1090. Retrieved from https://ejournal.seaninstitute.or.id/index.php/Ekonomi/article/view/836