Ichsan, Muhammad, and Retno Kusumastuti. “Analysis of Business Strategies in Dealing With Various Threats and In-Creasing Income at The Indonesian Classification Bureau of Tanjung Priok Main Branch”. International Journal of Economics Development Research (IJEDR) 4, no. 3 (May 17, 2023): 1245–1258. Accessed July 5, 2025. https://yrpipku.com/journal/index.php/ijedr/article/view/3846.