Columbia subject headings:
Language and languages--Variation--Periodicals.
Linguistic change--Periodicals.
Sociolinguistics--Periodicals.
Harvard subject headings:
Language and languages--Variation--Periodicals.
Linguistic change--Periodicals.
Princeton subject headings:
Language and languages--Variation--Periodicals.
Linguistic change--Periodicals.
Periodicals.
Sociolinguistics--Periodicals.