Gostin, Irina, and Adrian Oprea. “Anatomical Investigations on Endemic Campanula Romanica Savul. And Their Ecological Significance”. Bangladesh Journal of Botany 42, no. 1 (July 28, 2013): 139–144. Accessed November 22, 2024. https://banglajol.info/index.php/BJB/article/view/15877.