Gumkowski, Janusz; Leszczynski, Kazimierz: Poland Under Nazi Occupation. Polonia Pub. House, 1961. "Archived copy". Diarkibkan daripada yang asal pada 2012-05-27. Dicapai pada 2012-05-27.CS1 maint: archived copy as title (link)
books.google.com
Bohn, Robert: Die deutsche Herrschaft in den "germanischen" Ländern 1940-1945, p. 39. Steiner, 1997. [1]
Kay, Alex J: Exploitation, resettlement, Mass Murder: Political and Economic Planning for German Occupation Policy in the Soviet Union, 1940–1941. Berghahn Books, 2006. [2]
Dallin, Alexander: German rule in Russia 1941–1945: A Study of Occupation Policies. Westview press, 1981 [3]
Wasser, Bruno: Himmler's Raumplanung in Osten: Der Generalplan Ost in Polen 1940-1945, p. 51. Birkhäuser, 1993. [4]
Gumkowski, Janusz; Leszczynski, Kazimierz: Poland Under Nazi Occupation. Polonia Pub. House, 1961. "Archived copy". Diarkibkan daripada yang asal pada 2012-05-27. Dicapai pada 2012-05-27.CS1 maint: archived copy as title (link)