Imam, T.S., Aliyu, F.G. and Umar, H.F. 2014. Preliminary Phytochemical Screening, Elemental and Proximate Composition of Two Varieties of <i>Cyperus esculentus</i> (Tiger Nut). Nigerian Journal of Basic and Applied Sciences. 21, 4 (Jul. 2014), 247–251. DOI:https://doi.org/10.4314/njbas.v21i4.1.