Weingand, D. E. (1997). Customer service excellence: A concise guide for librarians. Chicago: American Library Association.
Dyfyniad Arddull ChicagoWeingand, Darlene E. Customer Service Excellence: A Concise Guide for Librarians. Chicago: American Library Association, 1997.
Dyfyniad MLAWeingand, Darlene E. Customer Service Excellence: A Concise Guide for Librarians. Chicago: American Library Association, 1997.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.