Lua APA (7ú heag.)

Peelen, E. (2018). Customer Relationship Management. Pearson Education India Pvt. Ltd.

Lua i Stíl Chicago (17ú heag.)

Peelen, Ed. Customer Relationship Management. New Delhi: Pearson Education India Pvt. Ltd, 2018.

Lua MLA (9ú heag.)

Peelen, Ed. Customer Relationship Management. Pearson Education India Pvt. Ltd, 2018.

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