edited with introductions by Michael Bromley, Tom O'Malley
Routledge , 1997
Buku Teks SO
McNair, Brian
A Member of the Hodder Headline Group, 1998
Buku Teks SO
C. Christhopher
Anmol Publicatioans PVT. ltd, 1997
Buku Teks SO
Ferguson, Donald L.
National Textbook, 1994
Buku Teks SO
edited by Elliot D. Cohen
Oxford University Press , 1992
Buku Teks SO