Columbia subject headings:
Harvard subject headings:
Professional sports--Economic aspects--Congresses.
Sports administration--Congresses.
Sports and state--Congresses.
Sports--Economic aspects--Congresses.
Sports--Marketing--Congresses.
Princeton subject headings:
Professional sports--Economic aspects--Congresses.
Sports administration--Congresses.
Sports and state--Congresses.
Sports--Economic aspects--Congresses.
Sports--Marketing--Congresses.