Dyfyniad APA
Kasper, H., Helsdingen, P. v., & Vries, W. d. (1999). Services marketing management: An international perspective. Wiley.
Dyfyniad Arddull Chicago
Kasper, Hans, Piet van Helsdingen, and Wouter de Vries. Services Marketing Management: An International Perspective. Chichester ; New York: Wiley, 1999.
Dyfyniad MLA
Kasper, Hans, et al. Services Marketing Management: An International Perspective. Wiley, 1999.
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