1. A. Susanna and N. Garcia-Jacas "The families and genera of vascular plants." 8, "Tribe Cardueae." 123 (2007)
2. N.J. Turland, J.H. Wiersema, F.R. Barrie, et al. "Regnum Vegetabile." 159, "International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code) adopted by the Nineteenth International Botanical Congress, Shenzhen, China, July 2017." 1 (2018)
3. A.G. Borisova, "Flora USSR." 28, "Serratula L." 259 (1963)
4. J.F.N. Bornmüller and P.E.E. Sintenis "Russkii Botanicheskii Zhurnal." 1911, "Compositarum species nonnullae novae e flora Asiae-Mediae." 1 (1911)
5. A.P. de Candolle, "Prodromus systematis naturalis regni vegetabilis, vol. 6." (1838)