Compositae Working Group (CWG) (2021). Global Compositae Database. Cirsium willdenowii Steud.. Accessed at: https://compositae.org/aphia.php?p=taxdetails&id=1248075 on 2025-03-12
Contributed data: Published Data only shown for fields conflicting with the consensus taxon record Nomencl. Bot. , ed. 2, 1 [Govaerts World Compositae Checklist A-G] [details] LSID urn:lsid:compositae.org:names:F1948348-CC43-4C6C-AE61-76FA7AF0E1E2 [details]