GOSTIN, I.; OPREA, A. Anatomical investigations on endemic Campanula romanica Savul. and their ecological significance. Bangladesh Journal of Botany, [S. l.], v. 42, n. 1, p. 139–144, 2013. DOI: 10.3329/bjb.v42i1.15877. Disponível em: https://www.banglajol.info/index.php/BJB/article/view/15877. Acesso em: 6 oct. 2022.