Bona, Mehmet. “Systematic Implications of Achene Characteristics in Genera <i>Centaurea</i> L., <i>Cyanus</i> Mill., <i>Psephellus</i> Cass. and <i>Rhaponticoides</I> Vaill. (Asteraceae)”. Bangladesh Journal of Plant Taxonomy 22, no. 2 (December 28, 2015): 125–136. Accessed December 22, 2024. https://banglajol.info/index.php/BJPT/article/view/26074.