Columbia subject headings:
English language--Dialects--United States.
English language--Social aspects--United States.
English language--United States.
English language--Variation.
Harvard subject headings:
English language--Dialects--United States
English language--Social aspects--United States
English language--United States
English language--Variation
Princeton subject headings:
English language--Dialects--United States.
English language--Social aspects--United States.
English language--United States.
English language--Variation.