ebrary, Inc. (2005). Customer relationship management: An Emerald guide. Emerald Group Publishing.
Chicago-referens (17:e uppl.)ebrary, Inc. Customer Relationship Management: An Emerald Guide. Bradford, England: Emerald Group Publishing, 2005.
MLA-referens (9:e uppl.)ebrary, Inc. Customer Relationship Management: An Emerald Guide. Emerald Group Publishing, 2005.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.