Blakemore, John Sidney, author
Cambridge Univesity Press, 1985
Buku Teks
Blakemore, John Sidney, author
W.B. Saunders, 1974
Buku Teks
Jesse, Kenneth E., author
Harcourt Brace Jovanovich, 1987
Buku Teks
Elliott, Roger J., author
English Language Book Society, 1978
Buku Teks
Academic Press, 1984
Buku Teks