Hilton, M. (1993). Assessing the quality of service: Facilitator's guide. Aga Khan Foundation.
Dyfyniad Arddull ChicagoHilton, Martine. Assessing the Quality of Service: Facilitator's Guide. Washington, DC: Aga Khan Foundation, 1993.
Dyfyniad MLAHilton, Martine. Assessing the Quality of Service: Facilitator's Guide. Aga Khan Foundation, 1993.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.