Fahmi, M., and C. R. R. Sidabutar. “Digital Marketing Capabilities and MSME Competitiveness in the Industry 4.0 Era: An Integrative Literature Review”. International Journal of Business, Law, and Education, vol. 7, no. 2, July 2026, pp. 1339-51, doi:10.56442/ijble.v7i2.1505.