Flew, Antony
Thames and Hudson , 1989
Buku Teks
Coxe, Antony Hippisley
Macmillan, 1980
Buku Teks
Panchyk, Katherine
Van Nostrand Reinhold,, 1983
Buku Teks
Beudeley, Michael
Kodansha International, 1997.
Buku Teks
Benzel, Katherine F.
McGraw-Hill, 1998
Buku Teks