Harvey, Chris
Chancellor Press, 1987
Buku Teks
Harvey, Chris
The Oxford Illustrated Press, 1993
Buku Teks
Winterowd, W. Ross
Harcourt Brace Jovanovich, 1981
Buku Teks
Wyler, Robert C
Macmillan, 1968
Buku Teks
Maugham, W. Somerset, author
Heineman, 1949
Buku Teks