World directory of mass communication researchers / comp. by Sylwester Dziki, Janina Maczuga and Walery Pisarek ; forew. by Walery Pisarek ; Bibliographic Section of IAMCR + CECOM (COMNET) and Press Research Centre in Cracow. - Dziki, Sylwester (1932-2015) (Biblioteka Wiedzy o Prasie., 1984)