GirigisuS., AdulojuE. I., AbubakarA., and OlanrewajuM. O. “COMPARATIVE STUDY OF HEAVY METALS IN PLANT AND SOIL OF SOME SELECTED MEDICINAL PLANT”. FUDMA JOURNAL OF SCIENCES, Vol. 4, no. 1, Apr. 2020, pp. 714 -21, https://fjs.fudutsinma.edu.ng/index.php/fjs/article/view/102.