BARUS, B.; DINA, S. MARKETING STRATEGY FOR HELMET PRODUCTS THROUGH DIGITAL MARKETING PT JAYA PLASTIK MANDIRI. JUMPE (JURNAL MANAJEMEN PEMASARAN), [S. l.], v. 2, n. 1, p. 1–9, 2024. Disponível em: https://ingreat.id/index.php/jumpe/article/view/116. Acesso em: 9 sep. 2025.