Schild, Herbert, author
McGraw-Hill, 1997
Buku Teks
Chomsky, Noam, author
Fontana/Collins , 1975
Buku Teks
Arnush, Craig, author
Sams Pub., 1995
Buku Teks
Vincent, Mark, author
London University, 2003
Buku Teks
Speight, Kathleen, author
The English Universities Press, 1957
Buku Teks