WASET
    Collins C. Ngwakwe,  Environmental Responsibility and Firm Performance: Evidence from Nigeria.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2008, vol. 22(10). 1055 - 1062
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/12811.