Nightingale, Kath
Taxation
Prentice-Hall, 2002
 Buku Teks
Taxation
edited by Emile Woolf
Pitman, 1986
 Buku Teks
The burden of Rhinitis and Rhinoconjunctivitis in adolescents
 Artikel Jurnal
Taxation in Sweden
Little, Brown and Co., 1959
 Buku Teks
Korean taxation
Ministry of Finance and Economy, 1997
 Buku Teks