Cita APA (7th ed.)
ebrary, Inc, & de Ruyter, D. K. (2002). Research in e-service. Emerald Group Publishing.
Cita Chicago (17th ed.)
ebrary, Inc, i Dr. Ko de Ruyter. Research in E-service. Bradford, England: Emerald Group Publishing, 2002.
Cita MLA (9th ed.)
ebrary, Inc, i Dr. Ko de Ruyter. Research in E-service. Emerald Group Publishing, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.