Mehta, Pavithra K., author
Berrett Koehler, 2011
Buku Teks
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
Crainer, Stuart
Capstone, 1998
Buku Teks