Kennedy, Dora, author
National Texbook, 1994
Buku Teks
Vendryes, J. (Joseph), 1875-1960, author
Routledge, 1996
Buku Teks
Bloomfield, Leonard, author
Holt, Rinehart and Winston, 1961
Buku Teks
Fromkin, Victoria A., author
Holt, Rinehart and Winston, 1981
Buku Teks
Gebhard, Jerry G., author
Cambridge University Press, 1999
Buku Teks