1. Standard Methods for the Examination of Water and Wastewater;American Public Health Association (APA),1999
2. VOC immobilization in soil by adsorption, absorption and encapsulation;Arocha;J. Hazard. Mater.,1996
3. A Comparison of Two Digestion Methods for the Analysis of Heavy Metals by Flame Atomic Absorption Spectroscopy;Caroline,2007
4. Guideline and Standards for Environmental Pollution Control in Nigeria. A Review;FMEnv,1991
5. The Impact of Exploration and Production Activities on the Environment: Implications for the Peasant Agriculture;Gbadagesin,1997