Karaer, Fergan, and Ferhat Celep. “Rediscovery of <i>Scorzonera amasiana< i> Hausskn. And Bornm. - A Threatened Endemic Species in Turkey”. Bangladesh Journal of Botany 36, no. 2 (October 30, 2008): 139–144. Accessed July 15, 2025. https://banglajol.info/index.php/BJB/article/view/1502.