By Marshall Cavendish

Published by Sang e Meel Publications, 1986

By D.Tabor

Published by Cambridge University press, 1987

By Daridm Hart

Published by Sang e meel Publications, 1986

By O.F.G. Kilgaer

Published by D.P.publication, 1989

By Muhammd Masood & Raza ul Haq Baabkhshani

Published by Azhar Publishers, 0

By M. Raza ul Haw Badakhshani (Comp.)

Published by Azhar publishers, 0

By M. Raza ul Haw Badakhshani

Published by Azhar publishers

By Houghton Mifflin

Published by Houghton Mifflin, 1945

By Max Weber

Published by Collier Books, 1962

By Ralph H Petruccl

Published by Macmillan publishing co., 1989