T.G. Chopilko. (2014). An investigation of individual functionality football referees of high qualification. H.S. Skovoroda Kharkov National Pedagogical University.
Chicago Style (17th ed.) CitationT.G. Chopilko. An Investigation of Individual Functionality Football Referees of High Qualification. H.S. Skovoroda Kharkov National Pedagogical University, 2014.
MLA (9th ed.) CitationT.G. Chopilko. An Investigation of Individual Functionality Football Referees of High Qualification. H.S. Skovoroda Kharkov National Pedagogical University, 2014.
Warning: These citations may not always be 100% accurate.