"België in de Tweede Wereldoorlog. Deel 5 : De kollaboratie / M. de Wilde. - Kapelle, 1985. - p. 84" . "Until 1941, the Duits-Vlaamse Arbeidsgemeenschap was a cultural organization, organizing film screenings and study tours. But when in 1941-09 SS-Gruppenführer Gottlob Berger was appointed as the general Chairman, the organization became a SS-instrument."@eng . "Duits-Vlaamse Arbeidsgemeenschap"@eng . .