Saleem, Mohammad, et al. “Cytotoxic Effect of Methanol Extract of Conyza Bonariensis on DMBA-Induced Skin Carcinogenesis: An in Vivo Study”. Bangladesh Journal of Pharmacology, vol. 10, no. 2, May 2015, pp. 467-74, doi:10.3329/bjp.v10i2.23063.