Ngui, R., A. Shafie, K. H. Chua, M. S. Mistam, H. M. Al-Mekhlafi, W. W. W. Sulaiman, R. Mahmud, and Y. A. L. Lim. “Mapping and Modelling the Geographical Distribution of Soil-Transmitted Helminthiases in Peninsular Malaysia: Implications for Control Approaches”. Geospatial Health, vol. 8, no. 2, May 2014, pp. 365-76, doi:10.4081/gh.2014.26.