Cita APA (7a ed.)

Zeithami, V. &. O. (2012). Service marketing (5 th.).

Cita Chicago Style (17a ed.)

Zeithami, Valarie & Others. Service Marketing. 5 th. Delhi, 2012.

Cita MLA (9a ed.)

Zeithami, Valarie & Others. Service Marketing. 5 th. 2012.