By Richard L. Liboff

Published by National book foundation, 2004

By Linus Pauling

Published by McGraw Hill Book Company, 0

By Arera C.L.

Published by Premier Publishing Co., 1966

By Vasudeva

Published by S. Chand and Co, 1964

By Wulber Schramm

Published by National book foundation, 2004

By A.W.Joshi

Published by Wiley Eastern Ltd., 1988

Published by Sang e Meel Publications, 1986

By Sybil P. Parker (Editor)

Published by Mc Graw-Hill book co., 1986

By R.C.Smith

Published by John Wiley and Sons, 1985

By Kittel charles and others

Published by McGraw Hill