Columbia subject headings:
American literature--Bibliography.
American literature--Reference books--Bibliography.
English language--Bibliography.
English language--Reference books--Bibliography.
Harvard subject headings:
American literature--Bibliography
American literature--Reference books--Bibliography.
English language--Bibliography
English language--Reference books--Bibliography.
Princeton subject headings:
American literature--Bibliography.
English language--Bibliography.
Reference books--American literature--Bibliography.
Reference books--English language--Bibliography.