Lua APA (7ú heag.)
ebrary, Inc, & Raab, G. (2008). Customer relationship management: A global perspective. Gower.
Lua i Stíl Chicago (17ú heag.)
ebrary, Inc, agus Gerhard Raab. Customer Relationship Management: A Global Perspective. Aldershot, Hampshire, England ; Burlington, VT: Gower, 2008.
Lua MLA (9ú heag.)
ebrary, Inc, agus Gerhard Raab. Customer Relationship Management: A Global Perspective. Gower, 2008.
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