Fitrie, Nazlita, Erwan Yusgunawan, Reza Nurul Ichsan, and Budi Alamsyah Siregar. 2026. “THE SYNERGY OF LEADERSHIP AND ORGANIZATIONAL BEHAVIOR ON MARKETING MANAGEMENT EFFECTIVENESS: A CASE STUDY ON SMES IN NORTH SUMATRA”. Journal of Sustainable Business, Economics and Accounting 1 (1):13-22. https://doi.org/10.47652/mjeb.v1i1.893.