CHAFFEY, D. (2019). Digital business and e-commerce management 7th ed. Person.
Lua i Stíl Chicago (17ú heag.)CHAFFEY, Dave. Digital Business and E-commerce Management 7th Ed. Person, 2019.
Lua MLA (8ú heag.)CHAFFEY, Dave. Digital Business and E-commerce Management 7th Ed. Person, 2019.
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