Columbia subject headings:
Tourism--Turkey--Bursa İli--Congresses.
Tourism--Turkey--Bursa--Congresses.
Harvard subject headings:
Tourism--Congresses
Tourism--Turkey--Bursa İli--Congresses.
Tourism--Turkey--Bursa--Congresses.
Tourism--Turkey--Congresses.
Princeton subject headings:
Bursa (Turkey)--Congresses.
Tourism--Turkey--Bursa--Congresses.