Columbia subject headings:
Spanish language--Dialects--Argentina--Bibliography.
Spanish language--Dialects--Uruguay--Bibliography.
Harvard subject headings:
Spanish language--Argentina--Bibliography.
Spanish language--Dialects--Argentina--Bibliography.
Spanish language--Dialects--Uruguay--Bibliography.
Spanish language--Uruguay--Bibliography.
Princeton subject headings:
Spanish language--Dialects--Argentina--Bibliography.
Spanish language--Dialects--Uruguay--Bibliography.