Frye, Frederic L.
Krieger Publishing , 1992
Buku Teks
McNitt, J.I.
The English Language Book Society , 1983
Buku Teks
Jones, Evan
Oxford University Press, 1969
Buku Teks
Mackenzie, R. Alec
AMACOM, 1972
Buku Teks
Manchester University Press, 1986
Buku Teks