APA (7th ed.) Zitazioa
Harris, E. K. (2007). Customer service: A practical approach (4th ed.). Prentice-Hall.
Chicago Style (17th ed.) Zitazioa
Harris, Elaine K. Customer Service: A Practical Approach. 4th ed. New Jersey: Prentice-Hall, 2007.
MLA (9th ed.) Zitazioa
Harris, Elaine K. Customer Service: A Practical Approach. 4th ed. Prentice-Hall, 2007.
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