Mateusz Rak,  Corporate Philanthropy as a Source of Competitive Advantage.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2016, vol. 113(5). 1741 - 1745
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/10004727.