Gitumu, Margaret W., et al. “Relationship Between Parental Marital Status And Students Self-Esteem Among Secondary School Students In Gichugu Division, Kirinyaga, Kenya”. Journal of Sociology, Psychology and Anthropology in Practice (JSPAP), vol. 3, no. 1, Apr. 2011, pp. 1-4, http://icidr.org.ng/index.php/Jspap/article/view/1582.