Peningkatan Layanan Melalui Strategi Marketing Door To Door. Economic : Jurnal Ekonomi dan Hukum Islam, [S. l.], v. 13, n. 02, p. 93–102, 2022. DOI: 10.59943/economic.v13i01.82. Disponível em: https://ejournal.staidu.ac.id/index.php/economic/article/view/82. Acesso em: 4 apr. 2026.