Limpitikul, W. “Costs and Effectiveness of Ciprofloxacin and Ceftriaxone in Treatment of Typhoid Fever in Children in Thailand”. International Journal of Public Health Research, vol. 3, no. 1, Feb. 2018, pp. 192-7, https://spaj.ukm.my/ijphr/index.php/ijphr/article/view/149.