Gonzalo Puente Ojea
Rosa Luxemburgo
Stedman Jones Gateth
Leon Trotski, Nikolai Bujarin, Grigori Zinoviev
Hale J.R.
John Reed
Rude George
Joan E. Garcés
Marcos Roitman Rosenmann
Holmes George
Georges Duby
Olwen Hufton
Julian Sanz, Jose Babiano
Alejandro Lillo
Geoffrey Parker
Pedro Angel Fernandez Vega
John Merriman
Christopher Hill
Sheila Fitzpatrick
Finkelstein Israel, Silberman Niel Asher
Samuel H. Baron
Stephen F. Cohen
Robert Service
Mari Paz Balibrea
Fernando Bermejo Rubio