B. Theonaldi, 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”, JWS, vol. 4, no. 10, pp. 1324–1333, Oct. 2025.