Johansson, Roger. "Om strejkbrytarna i Ådalen 1931" [About the strikebreakers in Ådalen 1931] (in Swedish). Arbetetsmarknad.se. Archived from the original on 18 May 2015. Retrieved 9 May 2015.
Johansson, Roger. "Om strejkbrytarna i Ådalen 1931" [About the strikebreakers in Ådalen 1931] (in Swedish). Arbetetsmarknad.se. Archived from the original on 18 May 2015. Retrieved 9 May 2015.