APA (7th ed.) Zitazioa
Solomon, R. (2016). The art of client service: The classic guide, updated for today's marketers and advertisers (Third edition.). John Wiley & Sons, Incorporated.
Chicago Style (17th ed.) Zitazioa
Solomon, Robert. The Art of Client Service: The Classic Guide, Updated for Today's Marketers and Advertisers. Third edition. Hoboken, New Jersey: John Wiley & Sons, Incorporated, 2016.
MLA (9th ed.) Zitazioa
Solomon, Robert. The Art of Client Service: The Classic Guide, Updated for Today's Marketers and Advertisers. Third edition. John Wiley & Sons, Incorporated, 2016.
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