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Dyfyniad Arddull ChicagoZeithaml, Valarie A; Bitner. Services Marketing: Integrating Customer Focus Accross the Firm. 5 edition. Tata Mc Graw Hill: New Delhi, 2011.
Dyfyniad MLAZeithaml, Valarie A; Bitner. Services Marketing: Integrating Customer Focus Accross the Firm. 5 edition. 2011.
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