Denton, D. K. (1989). Quality service: How America's top companies are competing in the customer-service revolution - and how you can too. Gulf Pub.
Citação do estilo Chicago (17ª ed.)Denton, D. Keith. Quality Service: How America's Top Companies Are Competing in the Customer-service Revolution - and How You Can Too. Houston, Tex: Gulf Pub, 1989.
Citação MLA (9ª ed.)Denton, D. Keith. Quality Service: How America's Top Companies Are Competing in the Customer-service Revolution - and How You Can Too. Gulf Pub, 1989.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.