Fauzi R, Nurwakhid N, Fadilah R, Silviana SC. COMMUNICATION MANAGEMENT IN IMPROVING THE QUALITY OF SERVICE FOR HAJJ AND UMRAH PILGRIMS. ICOBBA [Internet]. 2025 Oct. 31 [cited 2026 May 25];3(2):140-6. Available from: https://journal.ljpi.bbc.ac.id/index.php/icobba/article/view/579