“The Influences of Services and Promotion Quality to the Consumer Loyalty in The Group of Pilgrimage Guidance KBIH At-Taqwa Bekasi”. SMART : Management Journal 2, no. 1 (October 31, 2021): 10–27. Accessed April 3, 2026. https://ojs.umbk.ac.id/index.php/smart/article/view/257.