Sukirno, Sukirno, Hanif Aulawi, and Kristiana Widiawati. 2018. “E-SERVICE QUALITY OJEK ONLINE TERHADAP CUSTOMER RETENSION”. IKRA-ITH HUMANIORA : Jurnal Sosial Dan Humaniora 3 (1), 30-38. https://journals.upi-yai.ac.id/index.php/ikraith-humaniora/article/view/372.