Lua APA (7ú heag.)

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

Lua i Stíl Chicago (17ú heag.)

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

Lua MLA (9ú heag.)

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

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