Lua APA (7ú heag.)

Zeithaml, V. A. (2013). Services marketing: Integrating customer focus across the firm 7th ed. Mc GrawHill.

Lua i Stíl Chicago (17ú heag.)

Zeithaml, Valarie A. Services Marketing: Integrating Customer Focus Across the Firm 7th Ed. Mc GrawHill, 2013.

Lua MLA (8ú heag.)

Zeithaml, Valarie A. Services Marketing: Integrating Customer Focus Across the Firm 7th Ed. Mc GrawHill, 2013.

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