APA-čujuhus (7. p.)
Harris, E. K. (2013). Customer service: A practical approach (6th ed.). Pearson.
Chicago-čujuhus (17. p.)
Harris, Elaine K. Customer Service: A Practical Approach. 6th ed. Boston: Pearson, 2013.
MLA-čujuhus (9. p.)
Harris, Elaine K. Customer Service: A Practical Approach. 6th ed. Pearson, 2013.
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