Schellong, A. (2008). Citizen relationship management: A study of CRM in government. Lang.
Chicago-čujuhus (17. p.)Schellong, Alexander. Citizen Relationship Management: A Study of CRM in Government. Frankfurt am Main: Lang, 2008.
MLA-čujuhus (9. p.)Schellong, Alexander. Citizen Relationship Management: A Study of CRM in Government. Lang, 2008.
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