Compositae Working Group (CWG) (2024). Global Compositae Database.
Inula verbascifolia (Willd.) Hausskn.. Accessed through: Marine Species Traits editorial board (2024) Marine Species Traits at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=1108990 on 2025-04-04
Marine Species Traits editorial board (2025). Marine Species Traits.
Inula verbascifolia (Willd.) Hausskn.. Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1108990 on 2025-04-04