Anggreini, D. 2023. Analisis Implementasi Sistem Informasi Pemasaran di PT.GMM Surabaya. JOURNAL OF ECONOMICS, BUSINESS, MANAGEMENT, ACCOUNTING AND SOCIAL SCIENCES. 1, 4 (May 2023), 130–133. DOI:https://doi.org/10.63200/jebmass.v1i4.74.