Tohutoro APA (7th ed.)
ebrary, Inc, & de Ruyter, D. K. (2002). Research in e-service. Emerald Group Publishing.
Tohutoru Kātū Chicago (17th ed.)
ebrary, Inc, me Dr. Ko de Ruyter. Research in E-service. Bradford, England: Emerald Group Publishing, 2002.
Tohutoro MLA (9th ed.)
ebrary, Inc, me Dr. Ko de Ruyter. Research in E-service. Emerald Group Publishing, 2002.
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