Abubakar, Aliyu, et al. “Allelopathic Potential of Selected Weeds Extract on Germination and Growth of Borreria Stachydea (DC.)”. International Journal of Scientific Research in Biological Sciences, vol. 8, no. 6, Dec. 2021, pp. 62-68, https://ijsrbs.isroset.org/index.php/j/article/view/506.