Eryigit, C. and Eryigit, M. 2017. THE EFFECT OF SPONSORSHIP ANNOUNCEMENTS ON STOCK RETURNS: DOES INDUSTRY CONCENTRATION MATTER?. PEOPLE: International Journal of Social Sciences. 3, 3 (Dec. 2017), 239–251. DOI:https://doi.org/10.20319/pijss.2017.33.239251.