Oxford University Press, 2012
Buku Teks
Carías, Allan-Randolph Brewer, author
Cambridge University Press, 2009
eBooks
Atiyah, P. S.
Oxford University Press , 1987
Buku Teks
edited by John Woodwark
Clarendon Press, 1989
Buku Teks
Smith, Gary, author
Allyn and Bacon, 1985
Buku Teks