1. A response to Frynas
2. Political instability and business: Focus on Shell in Nigeria
3. Rivers State of Nigeria. January 1991. “'Judicial commission of inquiry into Umuechem disturbances under the chairman ship of Hon Justice Opubo Inko-Tariah'”. January, Port Harcourt: Rivers State of Nigeria.
4. Rivers State of Nigeria. “'Judicial Commission of Inquiry'”. 20–21.