Sultana, S, MA Hossain, MA Alam, SK Paul, C Mahmud, MR Kabir, N Haque, et al. 2012. “Nested Polymerase Chain Reaction for Early Diagnosis of Typhoid Fever”. Mymensingh Medical Journal 21 (1):21-27. https://www.banglajol.info/index.php/MMJ/article/view/12506.