ALBERTO, Kevin. PENGARUH PRODUK, HARGA, PROMOSI DAN LOKASI TERHADAP KEBERHASILAN USAHA. Jurnal Performa: Jurnal Manajemen dan Start-up Bisnis, [S. l.], v. 4, n. 4, p. 634–644, 2021. DOI: 10.37715/jp.v4i4.1677. Disponível em: https://journal.uc.ac.id/index.php/performa/article/view/1677. Acesso em: 20 feb. 2026.