Maschinenhalle der Zeche Zollern 2/4 (Westfälisches Industriemuseum) (German). archINFORM. Retrieved on 2011-06-09.

Zwischen Castrop-Rauxel und der Zeche Zollern (German). outdooractive.com/ALPSTEIN Tourismus GmbH & Co. KG. Retrieved on 2012-03-13.
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Category:Files reused by external parties out of compliance with licensing terms#Raymond/DortmundHigor (2012-02-10). Dortmund - Capital Cultural da Europa (Portuguese). fronteirametropole.blogspot.de. Retrieved on 2013-10-30.
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Kaufmann (2010-03-11). Dortmund - It's more than just grey: Past of Dortmund - the coal and steel mine (English). skyscrapercity.com. Retrieved on 2014-01-14.
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Category:Files reused by external parties out of compliance with licensing terms#Raymond/Dortmundnickneuwald (2014-01-16). Zeche Zollern – Schloss der Arbeit (German). phoemag.de / INTERBODEN Innovative Lebenswelten® GmbH & Co. KG. Retrieved on 2014-01-29.
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MatEfteling1992 (2014-08-09). Baron 1898 (German). eftelingfansite.de / Tim Hendriks. Retrieved on 2015-01-04.
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Category:Files reused by external parties out of compliance with licensing terms#Raymond/DortmundFreddie (2009-04-15). Maschinenhalle der Zeche 'Zollern II/IV' in Dortmund (German). de.bakoos.com. Retrieved on 2015-05-07.
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