Tey, Tsun Hang, author
Lexis Nexis, 2010
Buku Teks
McIntyre, Anne
Gaia Books Limited, 1994
Buku Teks
Artikel Jurnal
Leavell, Robert N., author
West Publishing, [date of publication no identified]
Buku Referensi
Hurley, Judith Benn, author
William Morrow and Company, 1994
Buku Referensi