Margareth Sagala, Y. ., and A. . Siregar. “CUSTOMER SATISFACTION DEVELOPMENT STRATEGY FOR ONLINE TRANSPORTATION USERS IN THE COVID-19 ERA (STUDY ON KEK ONLINE IN TEBING TINGGI)”. International Journal of Educational Review, Law And Social Sciences (IJERLAS), vol. 2, no. 1, Jan. 2022, pp. 89-98, doi:10.54443/ijerlas.v2i1.153.