Edwards, Douglas, author
Polity Press, 2014
Buku Teks
Neville, Adam M., author
Pitman, 1981
Buku Teks
Neville, Adam M., author
Pitman, 1995
Buku Teks
Moulson, A.J., author
John Wiley & Sons Inc., 2008
Buku Teks
Chakravarty, A. S. (Ardhendu Sekhar), 1931-, author
John Wiley & Sons, 1980
Buku Teks