A.I. Yaradua, A. J. Alhassan, A. Nasir, S. S. Matazu, A. Usman, A. Idi, I. U. Muhammad, S. A. Yaro & R. Nasir. (2020). Human Health Risk Assessment of Heavy Metals in Onion Bulbs Cultivated in Katsina State, North West Nigeria. Archives of Current Research International, 20(2), 30–39. https://doi.org/10.9734/acri/2020/v20i230175