Windrow, Martin
Grange Books, 2000
Buku Referensi
Franklin, Benjamin
The Spencer Press, 1936
Buku Teks
Maugham, W. Somerset
Fawcett, 1956
Koleksi Publik
Blundell, Nigel
Octopus Books Limited, 1980
Buku Teks SO
Zerwekh, JoAnn Graham
Nursing Education Consultans , 2000
Buku Teks SO