1. Shashi, C., A Text Book of Engineering Chemistry, Delhi: Dhappat Rai, 2003, pp. 1–27, 3rd ed.
2. Amadi, B.A., Agomuo, E.N., and Ibegbulem, C.O., Research Methods in Biochemistry, Zaria: Zaria, 2004, pp. 88–116, 2nd ed.
3. Umoren, S.A., Arabic Cell., 2008, vol. 15, pp. 751–761.
4. Okafor, P.C., Ebenso, E.E., and Ekbe, U.J., Int. J. Electrochem. Sci., 2010, vol. 5, no. 7, pp. 978–993.
5. Ikeuba, A.I., Okafor, P.C., Ekpe, U.J., and Ebenso, E.E., Int. J. Electrochem. Sci., 2013, vol. 8, pp. 7455–7467.