@misc{Tarka_Piotr_The,
 author={Tarka, Piotr},
 howpublished={online},
 publisher={Publishing House of the University of Economics in Katowice},
 language={eng},
 type={artykuł},
 title={The influence of macroeconomic factors on the financial expenditures and development of the marketing research},
 keywords={advertising spending, macroeconomic factors},
}