Das radikale Milieu Kieler Novemberrevolution, Sozialwissenschaft und Linksradikalismus 1917 – 1922 Siegfried, Detlef Heftet / 2004 / Tysk
European Cities, Youth and the Public Sphere in the Twentieth Century Siegfried, Detlef Digital bok / 2016 / Engelsk
Modern Lusts Ernest Borneman: Jazz Critic, Filmmaker, Sexologist Siegfried, Detlef Innbundet / 2020 / Engelsk
European Cities, Youth and the Public Sphere in the Twentieth Century Siegfried, Detlef Innbundet / 2005 / Engelsk
European Cities, Youth and the Public Sphere in the Twentieth Century Siegfried, Detlef Heftet / 2016 / Engelsk
Between Marx and Coca-Cola Youth Cultures in Changing European Societies, 1960-1980 Schildt Axel Heftet / 2006 / Engelsk
Between Marx and Coca-Cola Youth Cultures in Changing European Societies, 1960-1980 Schildt Axel Innbundet / 2006 / Engelsk
