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Service Quality Delivery Through Web Sites: A Critical Review of Extant Knowledge
Zeithaml, Valarie A., (2002)
A conceptual framework for understanding e-service quality : implications for future research and managerial practice
Zeithaml, Valarie A., (2000)
E-S-Qual : a multiple-item scale for assessing electronic service quality ; Report No. 04-112
Parasuraman, A., (2004)