Albert Karl, & J. Bradford Lawrence. (1990). The Service Advantage: How to Identify and Fulfill Customer Needs (In lần thứ 1.). U.S.A: Dow Jones - Irwin.
Style de citation ChicagoAlbert Karl, et J. Bradford Lawrence. The Service Advantage: How to Identify and Fulfill Customer Needs. In lần thứ 1. U.S.A: Dow Jones - Irwin, 1990.
Style de citation MLAAlbert Karl, et J. Bradford Lawrence. The Service Advantage: How to Identify and Fulfill Customer Needs. In lần thứ 1. U.S.A: Dow Jones - Irwin, 1990.
Attention : ces citations peuvent ne pas être correctes à 100%.