Dyfyniad APA

Knapp, D. . .. (2002). Guide to customer service skills for the help desk professional. Thomson Learning.

Dyfyniad Arddull Chicago

Knapp, Donna. Guide to Customer Service Skills for the Help Desk Professional. Canada: Thomson Learning, 2002.

Dyfyniad MLA

Knapp, Donna. Guide to Customer Service Skills for the Help Desk Professional. Thomson Learning, 2002.

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