By Silverman H.A.

Published by Pitman and Sons, 1960

By Ellsworth, P.T.

Published on 1984

By P.T.Ellsworth

Published by National Book Foundation, 1986

By Viqar Ahmad and Rashid Amjad

Published by Oxford University Press, 1984

By Bradely R. Schiller

Published by Tata McGraw Hill Education, 2011

By SL.Setd

Published by S. Chand and Co, 1962

By Arthur lewis, W.

Published on 1978

By Lewis, Arthur W.

Published by Unwin University Books, 1965

By W.Arthur Lewis

Published by Unwin University Books, 1965

By David Ricardo

Published by Atlantic Publishers and Distributers (pvt.) Ltd., 2010