Nwazue, N.R. (2011) “The Effect of Crude Oil Spill on the Ascorbic Acid Content of Some Selected Vegetable Species: Spinacea oleraceae, Solanum melongena and Talinum triangulare in an Oil Polluted Soil”, Pakistan Journal of Nutrition, 10(3), pp. 274–281. doi:10.3923/pjn.2011.274.281.