Columbia subject headings:
Communication, International--Congresses.
English language--Foreign countries--Congresses.
English language--Study and teaching--Foreign speakers--Congresses.
Harvard subject headings:
Communication, International--Congresses.
English language--Foreign countries--Congresses.
English language--Study and teaching--Foreign speakers--Congresses
Princeton subject headings:
Communication, International--Congresses.
English language--Foreign countries--Congresses.
English language--Study and teaching--Foreign speakers--Congresses.