Martin, M. (2013). Business efficiency for dummies. John Wiley & Sons, Inc..
Lua i Stíl Chicago (17ú heag.)Martin, Marina. Business Efficiency for Dummies. Hoboken, New Jersey: John Wiley & Sons, Inc., 2013.
Lua MLA (9ú heag.)Martin, Marina. Business Efficiency for Dummies. John Wiley & Sons, Inc., 2013.
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