World Register of Marine Species (WoRMS)
Compositae Working Group (CWG) (2026). Global Compositae Database. Scorzonera angustifolia thom.. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1202515 on 2026-08-30
Ledebour, C. F. (1833). Flora Altaica. 4.