Geddes, B. (2012). Advanced google adwords (2nd ed.). Wiley.
Lua i Stíl Chicago (17ú heag.)Geddes, Brad. Advanced Google Adwords. 2nd ed. Indianapolis, IN: Wiley, 2012.
Lua MLA (9ú heag.)Geddes, Brad. Advanced Google Adwords. 2nd ed. Wiley, 2012.
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