How to cite this article
APA /
Nwite, J. N. & Alu, M. O. (2015). Effect of different levels of spent engine oil on soil porperties, grain yield of maize and its heavy metal uptake in Abakaliki, Southeastern Nigeria. Journal of Soil Science and Environmental Management, 6(4), 92-99.
Chicago /
Nwite, J. N. and Alu, M. O.. "Effect of different levels of spent engine oil on soil porperties, grain yield of maize and its heavy metal uptake in Abakaliki, Southeastern Nigeria." Journal of Soil Science and Environmental Management 6, no. 4 (2015): 92-99.
MLA /
Nwite, et al. "Effect of different levels of spent engine oil on soil porperties, grain yield of maize and its heavy metal uptake in Abakaliki, Southeastern Nigeria." Journal of Soil Science and Environmental Management 6.4 (2015): 92-99.