Compositae Working Group (CWG) (2021). Global Compositae Database.
Cirsium acaule (L.) Scop.. Accessed through: RAS (Eds.) (2021) Register of Antarctic Species at: http://ras.biodiversity.aq/aphia.php?p=taxdetails&id=425713 on 2024-05-05
RAS (Eds.) (2024). Register of Antarctic Species.
Cirsium acaule (L.) Scop.. Accessed at: https://ras.biodiversity.aq/aphia.php?p=taxdetails&id=425713 on 2024-05-05