Theonaldi, B., F. . Theonaldi, L. Theonaldi, and . A. S. . Setiadi. “The Influence of Relationship Marketing and Service Delivery on Customer Satisfaction and Customer Loyalty With Customer Engagement Behaviour As a Moderating Effect in Indonesia’s Internet Service Providers Industry”. Journal of World Science, vol. 4, no. 10, Oct. 2025, pp. 1324-33, doi:10.58344/jws.v4i10.1513.