Dyfyniad APA

KARR R. (1998). COMPLETE IDIOT`S GUIDE TO GREAT CUSTOMER SERVICE. PRENTICE -HALL INTERNATIONAL, INC.

Dyfyniad Arddull Chicago

KARR R. COMPLETE IDIOT`S GUIDE TO GREAT CUSTOMER SERVICE. NEW DELHI: PRENTICE -HALL INTERNATIONAL, INC, 1998.

Dyfyniad MLA

KARR R. COMPLETE IDIOT`S GUIDE TO GREAT CUSTOMER SERVICE. PRENTICE -HALL INTERNATIONAL, INC, 1998.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.