National University of Singapore, 1997
Buku Teks
National University of Singapore, [date of publication not identified]
Buku Referensi
National University of Singapore, [date of publication not identified]
Buku Referensi
Gibaldi, Joseph, author
The Modern Language Association, 2003
Buku Teks
Johson, Jean
Bedford Books, 1987
Buku Teks