Gaol, Angelia Parulian Lumban, and Aisyah Azhar Adam. “Pengaruh Harga, Citra Merek, Dan Word Of Mouth Terhadap Keputusan Jamaah Umroh Memilih PT. Grand Darussalam Tour & Travel”. RIGGS: Journal of Artificial Intelligence and Digital Business 4, no. 4 (January 14, 2026): 10963–10973. Accessed January 31, 2026. https://journal.ilmudata.co.id/index.php/RIGGS/article/view/5412.