Muliawan, Sylvia Y., and Lucky H. Moehario. “Is Widal Test Still a Usefull Method As a Routine Early Diagnostic for Typhoid Fever in Hospitals ?”. Medical Journal of Indonesia 8, no. 4 (October 1, 1999): 237-9. Accessed April 18, 2024. http://mji.ui.ac.id/journal/index.php/mji/article/view/718.