Kristiyuana, Hakim, L., Yuliana, S. dan Habibbullah, M. 2026. Pelayanan Humanis Muthawif dan Tour Leader terhadap Loyalitas Jamaah Umrah dan Word of Mouth di PT Surya Madina. Bayani. 6, 1 (Feb 2026), 24–35. DOI:https://doi.org/10.52496/bayaniV.6I.1pp24-35.