Johnston Robert. (2008). Service Operations Management (2nd.). Pearson.
Dyfyniad Arddull ChicagoJohnston Robert. Service Operations Management. 2nd. Noida: Pearson, 2008.
Dyfyniad MLAJohnston Robert. Service Operations Management. 2nd. Pearson, 2008.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.