Lua APA (7ú heag.)

Zikmund, W. (2004). Customer relationship management. John Wiley.

Lua i Stíl Chicago (17ú heag.)

Zikmund, William. Customer Relationship Management. Singapore: John Wiley, 2004.

Lua MLA (9ú heag.)

Zikmund, William. Customer Relationship Management. John Wiley, 2004.

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