José M. Brotons and  Manuel E. Sansalvador,  A Case Study on the Value of Corporate Social Responsibility Systems.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2018, vol. 139(7). 530 - 534
    [viewed 14 October 2019]. Available from: https://publications.waset.org/pdf/10009252.