Rudolf Hilferding : the tragedy of a German Social Democrat / William Smaldone

by Smaldone, William 1958-
Published: DeKalb : Northern Illinois Univ. Press, 1998

Library: Institute for Contemporary History (Munich)

Who's who in World War One / J. M. Bourne

by Bourne, John M.
Published: London [u.a.] : Routledge, 2001

Library: Topography of Terror (Berlin)

Dictionnaire biographique du mouvement ouvrier international

Published: Paris : Éd. Ouvrieres

Library: Institute for Contemporary History (Munich)