Lua APA (7ú heag.)

Jochen Wirtz. (2019). Service Marketing (8th ed.). pearson.

Lua i Stíl Chicago (17ú heag.)

Jochen Wirtz. Service Marketing. 8th ed. Delhi: pearson, 2019.

Lua MLA (9ú heag.)

Jochen Wirtz. Service Marketing. 8th ed. pearson, 2019.

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