JULIANA MEGA PUTRI SIAGIAN. Analisis Digital Marketing, Desain Produk dan Endorsment terhadap Keputusan Pembelian Kosmetik Mustika Ratu di Tokopedia Kota Batam . OPTIMAL Jurnal Ekonomi dan Manajemen, [S. l.], v. 6, n. 2, p. 84–92, 2026. DOI: 10.55606/optimal.v6i2.10338. Disponível em: https://researchhub.id/index.php/optimal/article/view/10338. Acesso em: 17 apr. 2026.