The automatically generated citations by Citoid (searched e.g. by ISBN/ISSN/URL) contain multiple errors and mistakes these days. When we analyze these errors and mistakes, we have to admit they look like they are loaded from some non-Czech database/source. Could it be possible to search Czech autorities databases (e.g. NK ČR) first on the Czech Wikipedia?
Re-posted and translated from the on-wiki discussion at the Village Pump