Lyons, John, author
New York Cambridge University Press 1992,
Buku Teks
Bloomfield, Leonard, author
Amsterdam John Benjamins Publishing 1983
Buku Teks
Bloom, Lois
New York John Wiley & Sons 1978
Buku Teks
Edward Arnold ,
Majalah, Jurnal, Buletin
San Diego : Sosiological Abstracts Inc.
Majalah, Jurnal, Buletin