Heriawan , B., & Soelistiyono , A. (2022). STRATEGY OF BROTOJOYO POST AGENT IN THE COMPETITION OF PACKAGE AND LETTER DELIVERY AGENTS: CASE STUDY POS AGENT BROTOJOYO SEMARANG. International Journal of Social and Management Studies, 3(4), 34–42. https://doi.org/10.5555/ijosmas.v3i4.162