Hernando, Hendrick, and Wely Hadi Gunawan. “Loyalty Among Online Food Delivery Customers: Extended Scale of E-Service Quality”. Jurnal Manajemen Maranatha 20, no. 2 (May 12, 2021): 167–174. Accessed April 19, 2024. https://journal.maranatha.edu/index.php/jmm/article/view/3507.