Sumarno, Sumarno, and Fahry Reza. “Digital Marketing Analysis through PPC Advertising Strategies to Improve the Competitiveness of MSMEs”. International Journal of Business, Management and Economics 7, no. 2 (May 31, 2026): 100 - 116. Accessed October 7, 2026. https://journal.jis-institute.org/index.php/ijbmer/article/view/3510.