Baxi, Upendra, editor
Cambridge University Press, 2015
eBooks
Cheeseman, Henry R., author
Pearson - Prentice Hall, 2006
Buku Teks
Cambridge University Press, 2004
Buku Teks
Melanie Frappier, Derek H. Brown, Robert DiSalle, editor
[Springer, Springer], 2012
eBooks
edited by P.M.S. Hacker and J. Raz
Clarendon Press, 1988
Buku Teks