Soegoto, Eddy Soeryanto, and Rivaldy Syahputra. “The Competitive of Promotion Strategy in Businesses”. Proceeding of International Conference on Business, Economics, Social Sciences, and Humanities 3 (March 10, 2023): 125–129. Accessed June 7, 2025. https://proceedings.unikom.ac.id/index.php/icobest/article/view/23.