Többens and Schultz (English Wikipedia)

Powell 2000, p. 114 (ibidem).
Dan Kurzman (2009). Tobbens Poniatow factories. Da Capo Press. p. 346. ISBN 978-0786748266. Retrieved 9 March 2015. {{cite book}}: |work= ignored (help)
Lucy S. Dawidowicz (2010). The War Against the Jews: 1933–1945. Open Road Media. pp. 270–272. ISBN 978-1453203064. Retrieved 8 March 2015. {{cite book}}: |work= ignored (help)
Powell, Lawrence N. (2000). Troubled Memory. Univ of North Carolina Press. p. 114. ISBN 0807825042.
Nicosia, Francis; Niewyk, Donald (2000). The Columbia Guide to the Holocaust. New York: Columbia University Press. p. 232. ISBN 0231528787.
Stone, Dan (1 September 2010). Histories of the Holocaust. Oxford University Press. ISBN 978-0191614200. Retrieved 11 July 2013.
Dobroszycki, Lucjan (1984). "Introduction (Ostindustrie)". The chronicle of the Łódź Ghetto: 1941–1944. Yale University Press. p. lxi. ISBN 0300039247. Retrieved 9 March 2015.

deathcamps.org (Global: low place; English: low place)

ARC (16 July 2006). "Poniatowa: Aktion Erntefest". Walter Toebbens Company in the Warsaw Ghetto. Action Reinhard Camps. Retrieved 9 March 2015.

Kopówka, Edward; Rytel-Andrianik, Paweł (2011), "Treblinka II – Obóz zagłady" [Monograph, chapt. 3: Treblinka II Death Camp] (PDF file, direct download 20.2 MB), Dam im imię na wieki [I will give them an everlasting name. Isaiah 56:5] (in Polish), Drohiczyńskie Towarzystwo Naukowe [The Drohiczyn Scientific Society], pp. 116–117, ISBN 978-83-7257-496-1, retrieved 8 March 2015, The amount of loot stolen by Globocnik himself is unknown, although SS-Unterscharführer Franz Suchomel admitted in court that he filled a box with one million Reichsmarks for him.{{citation}}: CS1 maint: work parameter with ISBN (link)

CBnZŻ (2011). "Getto Warszawskie". Workshops, with internal links to locations (in Polish). Centrum Badań nad Zagładą Żydów. Retrieved 9 March 2015.

Browning, Christopher R. (1998) [1992]. "Arrival in Poland" (PDF). Ordinary Men: Reserve Police Battalion 101 and the Final Solution in Poland. Penguin Books. pp. 135–142. Archived from the original (PDF file, direct download 7.91 MB complete) on 19 October 2013. Retrieved 7 May 2013.

Chris Webb, H.E.A.R.T (2009). "Transfer of Factories from the Warsaw Ghetto". Georg Michalsen Testimony. Holocaust Education & Archive Research Team. Retrieved 8 March 2015. It is correct that at the beginning of the Stroop Action I still took care of a transfer of Toebbens Jews to Poniatowa, which means that one more transfer of the firm of Toebbens to Poniatowa left Warsaw... Of special note is the fact that I was not a participant in the transport of Jews of the Schultz firm to Trawniki. If such a transport took place, then possibly SS Oberscharfuhrer Bartetzko was involved. – SS-Sturmbannführer Georg Michalsen.

John Menszer (2015). "Tobbens' Shop in the Warsaw ghetto". Background information to Survivor Stories. Holocaust Survivors: Encyclopedia. Retrieved 8 March 2015.

Robin O'Neil (2008). The 'Entefest' (Harvest Festival) massacres. JewishGen Yizkor Book Project. ISBN 978-0976475934. Retrieved 8 March 2015. {{cite book}}: |work= ignored (help)

Dariusz Pawłoś, Fundacja Polsko-Niemiecka Pojednanie (2015). "Eksploatacja wsi 1939–1945" [German economic exploitation of Polish countryside 1939–1945]. Eksploatacja Ekonomiczna i Wysiedlenia Ludności Wiejskiej. Instytut Pamięci Narodowej. Retrieved 8 March 2015.

Browning, Christopher R. (1998) [1992]. "Arrival in Poland" (PDF). Ordinary Men: Reserve Police Battalion 101 and the Final Solution in Poland. Penguin Books. pp. 135–142. Archived from the original (PDF file, direct download 7.91 MB complete) on 19 October 2013. Retrieved 7 May 2013.