SUPRAYITNO, E. The Influence of Brand Ambassador and Brand Image on Mobile Purchase Decisions (Case Study in Medan City). Jurnal Mantik, [S. l.], v. 6, n. 2, p. 2584-2589, 2022. Disponível em: https://iocscience.org/ejournal/index.php/mantik/article/view/2856. Acesso em: 17 may. 2026.