Nyakamba, J., and M. J. G. Muraya. “CONTRIBUTIONS AND CHALLENGES ASSOCIATED WITH MEASUREMENT AND EVALUATION OF PUBLIC RELATIONS IN SELECTED KENYAN PARASTATALS”. International Journal of Communication and Public Relation, vol. 3, no. 1, Dec. 2018, pp. 36 -50, https://www.iprjb.org/journals/index.php/IJCPR/article/view/798.