Wirtz, J. Services Marketing: People, Technology, Strategy (9th.). World Scientific.
Cita Chicago (17th ed.)Wirtz, Jochen. Services Marketing: People, Technology, Strategy. 9th. World Scientific.
Cita MLA (9th ed.)Wirtz, Jochen. Services Marketing: People, Technology, Strategy. 9th. World Scientific.
Atenció: Aquestes cites poden no estar 100% correctes.