English Jörg Bewersdorff Cited by user 2A01:598:C820:3E9A:881B:8F27:8F00:B3DE on 16 Sep 2021 pages=56–59|archivedate=2016-05-13|title=Games makers worldwide. The business year for the Gauselmann Group 2014|accessdate=2018-06-14}}.
English Jörg Bewersdorff Cited by user 2A01:598:C820:3E9A:881B:8F27:8F00:B3DE on 16 Sep 2021 pages=56–59|archivedate=2016-05-13|title=Games makers worldwide. The business year for the Gauselmann Group 2014|accessdate=2018-06-14}}.