Franklin, Benjamin
The Spencer Press, 1936
Buku Teks
Maugham, W. Somerset, author
Fawcett, 1956
Koleksi Publik
Blundell, Nigel, author
Octopus Books Limited, 1980
Buku Teks
McGraw-Hill, [date of publication not identified]
Buku Teks
Muller, Kal, author
Periplus , 1999
Buku Referensi