Arby, R. R. “VERTICAL COMMUNICATION ON ACHIEVEMENT MOTIVATION AND SKILLS: A STUDY OF EMPLOYEE’S PERSPECTIVE FROM A MULTI-LEVEL MARKETING COMPANY IN BANDUNG, INDONESIA”. Jurnal Ekonomi, Bisnis &Amp; Entrepreneurship (e-Journal), vol. 15, no. 1, Apr. 2021, pp. 8-15, doi:10.55208/jebe.v15i1.217.