Herryanto, et al. “Analysis of the Influences of Service Quality, Brand Image, and Customer Satisfaction on the Customer Loyalty of J&T Expedition Services, Manado City”. EUROPEAN JOURNAL OF BUSINESS STARTUPS AND OPEN SOCIETY, vol. 4, no. 5, May 2024, pp. 159-68, http://inovatus.es/index.php/ejbsos/article/view/3203.