Gracilla, Daniel E., and Jacqueline Viste Bagunu. 2014. “Radiation Cytogenetic Studies on Philippine Ashitaba (Gynura Nepalensis DC)”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 17 (1):1-10. https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/2413.