FINDI OKTAVIANI; DIDIN CHONYTA. STRATEGI PELAYANAN BIRO HAJI DAN UMROH DI PT. NUR HARAMAIN. HARAMAIN: Jurnal Manajemen Bisnis, [S. l.], v. 1, n. 02, p. 71–79, 2021. DOI: 10.66931/jmb-86. Disponível em: https://e-journal.ibama.ac.id/index.php/jmb/article/view/86. Acesso em: 8 sep. 2026.