Subhadradevi, V., Asokkumar, K., Umamaheswari, M., Sivashanmugam, A.T. and Sankaranand, R. 2010. In vitro antioxidant activity of Vetiveria zizanioides root extract. Tanzania Journal of Health Research. 12, 2 (Apr. 2010), 138–143. DOI:https://doi.org/10.4314/thrb.v12i2.56401.