Seligman,Edwin R.A.
Gene Sharp
Eva March Tappan
Robin Wall Kimmerer
Northcote Parkinson C.
Knoop, Douglas.
Tiwari,R.D.
Monkswell,Lord.
Samuel. O Dunn
Govind Ranadf Mahadeva.
Rushbrook Williams L.F.
Mehta,N.B.
Pandit,Y.S.
J. G. C Fuller