APA-viite (7. p.)
Gross, T. S. (2004). Positively outrageous service: How to delight and astound your customers and win them for life (2nd ed.). Dearborn Trade.
Chicago-viite (17. p.)
Gross, T. Scott. Positively Outrageous Service: How to Delight and Astound Your Customers and Win Them for Life. 2nd ed. Chicago: Dearborn Trade, 2004.
MLA-viite (9. p.)
Gross, T. Scott. Positively Outrageous Service: How to Delight and Astound Your Customers and Win Them for Life. 2nd ed. Dearborn Trade, 2004.
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