Rühl, O. Educating about the mass murder of people with disabilities. Mass murder of people with disabilities and the Holocaust.
Chicago-viite (17. p.)Rühl, Otto. "Educating About the Mass Murder of People with Disabilities." Mass Murder of People with Disabilities and the Holocaust .
MLA-viite (8. p.)Rühl, Otto. "Educating About the Mass Murder of People with Disabilities." Mass Murder of People with Disabilities and the Holocaust, .
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.