"Genocide of European Roma (Gypsies), 1939–1945." United States Holocaust Memorial Museum. United States Holocaust Memorial Council, 29 Jan. 2016. Web. 20 Apr. 2016.
"Nazi Persecution of Soviet Prisoners of War." United States Holocaust Memorial Museum. United States Holocaust Memorial Council, 29 Jan. 2016. Web. 20 Apr. 2016.
"Jehovah's Witnesses." United States Holocaust Memorial Museum. United States Holocaust Memorial Council, 29 Jan. 2016. Web. 20 Apr. 2016.
"Persecution of Homosexuals in the Third Reich." United States Holocaust Memorial Museum. United States Holocaust Memorial Council, 29 Jan. 2016. Web. 20 Apr. 2016.
"People with Disabilities." United States Holocaust Memorial Museum. United States Holocaust Memorial Council, n.d. Web. 20 Apr. 2016.
"Blacks during the Holocaust." United States Holocaust Memorial Museum. United States Holocaust Memorial Council, 29 Jan. 2016. Web. 20 Apr. 2016.
"Classification System in Nazi Concentration Camps." United States Holocaust Memorial Museum. United States Holocaust Memorial Council, 29 Jan. 2016. Web. 20 Apr. 2016.
"Nazi Persecution of Soviet Prisoners of War." United States Holocaust Memorial Museum. United States Holocaust Memorial Council, 29 Jan. 2016. Web. 20 Apr. 2016.
"Jehovah's Witnesses." United States Holocaust Memorial Museum. United States Holocaust Memorial Council, 29 Jan. 2016. Web. 20 Apr. 2016.
"Persecution of Homosexuals in the Third Reich." United States Holocaust Memorial Museum. United States Holocaust Memorial Council, 29 Jan. 2016. Web. 20 Apr. 2016.
"People with Disabilities." United States Holocaust Memorial Museum. United States Holocaust Memorial Council, n.d. Web. 20 Apr. 2016.
"Blacks during the Holocaust." United States Holocaust Memorial Museum. United States Holocaust Memorial Council, 29 Jan. 2016. Web. 20 Apr. 2016.
"Classification System in Nazi Concentration Camps." United States Holocaust Memorial Museum. United States Holocaust Memorial Council, 29 Jan. 2016. Web. 20 Apr. 2016.