By B. Russel

Published by Unwin Books, 1964

By V.H. Collins

Published by Longmans green and Co., 1954

By Wiltian N Nelson

Published by Sang e Meel Publications, 1986

By John Stuart Mill

Published by Oxford University Press, 1966

By Shane

Published by Laid Law Brothers, 1956

By Prof. Bhatti;A.A.

Published by Islamic mission, 0

By Ronald Mackin

Published by National book foundation, 2004

By Harvey M. Deitel, Paul J. Deitel and David R. Chaf

Published by Pearson Education Inc., 2013

By George ……………..

Published on 1984

By Jan Mikusinski and Thomas k. Boehme

Published by Pergamon Press, 1987