Compositae Working Group (CWG) (2025). Global Compositae Database.
Hieracium glaucinum subsp. cinerascens (Jord.) Breistr. & Litard.. Accessed through: Marine Species Traits editorial board (2025) Marine Species Traits at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1154677 on 2025-04-03
Marine Species Traits editorial board (2025). Marine Species Traits.
Hieracium glaucinum subsp. cinerascens (Jord.) Breistr. & Litard.. Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1154677 on 2025-04-03