Manik, Lindung Parningotan. “Design Pattern Evaluation on A RESTful API Wrapper: A Case Study of Software Integration With An Internet Payment Gateway Using Model-Driven Architecture”. Journal of Information Technology and Computer Science 4, no. 3 (December 20, 2019): 222–232. Accessed October 4, 2023. https://jitecs.ub.ac.id/index.php/jitecs/article/view/107.