Karna, Pushpa. “Cytological Studies on Two Species, Xanthium Strumarium Linn. and Bidens Pilosa Linn. Var. Minor (Blume) Sherff (Asteraceae-Heliantheae) from Nepal”. International Journal of Applied Sciences and Biotechnology 5, no. 1 (March 25, 2017): 66–71. Accessed April 24, 2024. https://www.nepjol.info/index.php/IJASBT/article/view/17010.