Zeithaml, V. A. Services Marketing (2022.). McGraw Hill Education (India) Private Limited.
Čikaški stil citiranja (17. izdanje)Zeithaml, Valarie A. Services Marketing. 2022. McGraw Hill Education (India) Private Limited.
MLA način citiranja (9. izdanje)Zeithaml, Valarie A. Services Marketing. 2022. McGraw Hill Education (India) Private Limited.
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