Johns, T. (1994). Perfect customer care: All you need to get it right first time. Arrow, Random House.
Style de citation Chicago (17e éd.)Johns, Ted. Perfect Customer Care: All You Need to Get It Right First Time. London : UK: Arrow, Random House, 1994.
Style de citation MLA (8e éd.)Johns, Ted. Perfect Customer Care: All You Need to Get It Right First Time. Arrow, Random House, 1994.
Attention : ces citations peuvent ne pas être correctes à 100%.