Ryan, D. (2017). Understanding digital marketing: Marketing strategies for engaging the digital generation (4th.). Kogan Page.
Lua i Stíl Chicago (17ú heag.)Ryan, Damian. Understanding Digital Marketing: Marketing Strategies for Engaging the Digital Generation. 4th. Kogan Page, 2017.
Lua MLA (9ú heag.)Ryan, Damian. Understanding Digital Marketing: Marketing Strategies for Engaging the Digital Generation. 4th. Kogan Page, 2017.
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