DELLA AULIA PUTRI EKAWATI; DEWI KHRISNA SAWITRI. Analisis Peran Sales Call dalam Meningkatkan Efektivitas Penawaran di Sektor Perhotelan. OPTIMAL Jurnal Ekonomi dan Manajemen, [S. l.], v. 6, n. 1, p. 608–622, 2026. DOI: 10.55606/optimal.v6i1.9630. Disponível em: https://researchhub.id/index.php/optimal/article/view/9630. Acesso em: 25 jan. 2026.