Uddin, Sharmeen, Lillian Alnsour, Peter Segun, Huseyin Servi, Sezgin Celik, R. Süleyman Göktürk, Afaf Al-Groshi, et al. 2017. “Flavonoids from Two Turkish Centaurea Species and Their Chemotaxonomic Implications”. Trends in Phytochemical Research 1 (4): 243-48. https://oiccpress.com/tpr/article/view/11700.