Cita APA (7th ed.)
Kasper, H., Helsdingen, P. v., & Vries, W. d. (1999). Services marketing management: An international perspective. Wiley.
Cita Chicago (17th ed.)
Kasper, Hans, Piet van Helsdingen, i Wouter de Vries. Services Marketing Management: An International Perspective. Chichester ; New York: Wiley, 1999.
Cita MLA (9th ed.)
Kasper, Hans, et al. Services Marketing Management: An International Perspective. Wiley, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.