H.M.R.S.S., Gunawardana, D. Kulathunga, and W.L.M.V. Perera. 2015. “Impact of Self Service Technology Quality on Customer Satisfaction: A Case of Retail Banks in Western Province in Sri Lanka”. Gadjah Mada International Journal of Business 17 (1), 1-24. https://dev.journal.ugm.ac.id/v3/gamaijb/article/view/15497.