Djan, Ismulyana, and Siti Rubbiah Adawiyyah. 2021. “Customer Satisfaction Analysis and Its Impact on Customer Loyalty Delivery Services Reviewed from Service Quality and Price”. Technium Social Sciences Journal 21 (1). Constanta, Romania:635-44. https://techniumscience.com.techniumscience.pluscommunication.eu/index.php/socialsciences/article/view/3880.