Freddy SP Hutabarat, TB.M.Rizki Indra Permana and Liana Patricia Masella (2022) “The Effect of Health Protocol Security Implementation, Employee Competence, and Service Quality toward MRT Transportation Customer Satisfaction during Covid-19 Pandemic”, Proceeding International Conference Of Innovation Science, Technology, Education, Children And Health, 2(1), pp. 36–47. doi: 10.62951/icistech.v2i1.11.