Lua APA (7ú heag.)

Ryan,Damian. (2017). Understanding digital marketing (4.). Kogen page Ltd.

Lua i Stíl Chicago (17ú heag.)

Ryan,Damian. Understanding Digital Marketing. 4. London: Kogen page Ltd, 2017.

Lua MLA (9ú heag.)

Ryan,Damian. Understanding Digital Marketing. 4. Kogen page Ltd, 2017.

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