Keyshia Putri Jugosatrio, Audijie, Raihan Prabaswara Suwardana, and Shafa Khansa A. 2024. “Daisy Kost’s Digital Marketing Optimization”. COSTA : Community Service and Outreach 1 (1): 58-63. https://www.costa.enterprisepublisher.com/index.php/CST/article/view/5.