Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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