Lowell, L. (2007). 42 Rules for Marketing. Prolibibris Publishing Media.
Lua i Stíl Chicago (17ú heag.)Lowell, Laura. 42 Rules for Marketing. USA: Prolibibris Publishing Media, 2007.
Lua MLA (9ú heag.)Lowell, Laura. 42 Rules for Marketing. Prolibibris Publishing Media, 2007.
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