By Eldden White Sitt

Published by National Book Foundation, 1986

By Stephenson James M.A.

Published by Sir Issac Pitman and sons, 1965

By S.A.Rashid

Published by Kitabistan Publishing Co., 1967

By Khan Muhammad Rafiq

Published by The Carvan Book House, 1987

By Lewis J.Kleinsmith Valerie M. Kish

Published by National book foundation, 2004

By George Shorttey and Dudley willtans

Published by Sang e meel publications, 1986

By S.A.Rashid

Published by K.Publishing Co., 0

By Chisholm

Published by Scott Foresmant Co., 0

By Alfred Marshall

Published by Macmillan and co, 1961

By Dominick Salvatore and Eugene Diulio

Published by Schaum's Outline Series McGraw-Hill, 0