By Dr.Muhammad bin Abdullah As Saheen…………..

Published by Darussalam, 1999

By Director of education, Lahore

Published by Director of education, 0

Published by پاکستان لیگل پبلیکشنز, 0

By Govt Printing press

Published by Govt. Printing press, 0

By John David Jackson

Published by John Willey and Sons Inc., 1999

By J.A.K Thomson

Published by Collier Books, 1962

By T.W.B. Kibble

Published by Londman Scientific and Technical, 1985

By Tail Chow

Published by National book foundation, 2004

By Coldstein, Herbert

Published by Addison-Wesley, 1972

By Jack J Kanshki

Published by Butterworth Heinemnn Ltd., 1992