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Karpagam KB, Ganesh B (January 2020). "Leptospirosis: a neglected tropical zoonotic infection of public health importance-an updated review". European Journal of Clinical Microbiology & Infectious Diseases. 39 (5): 835–846. doi:10.1007/s10096-019-03797-4. PMID31898795. S2CID209669669.
Farrar J, Hotez P, Junghanss T, Kang G, Lalloo D, White NJ (2013). Manson's Tropical Diseases E-Book (dalam bahasa Inggeris). Elsevier Health Sciences. m/s. 438. ISBN978-0-7020-5306-1. Diarkibkan daripada yang asal pada 8 September 2017. Dicapai pada 2 September 2017.
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James, William D.; Berger, Timothy G.; dll. (2006). Andrews' Diseases of the Skin: clinical Dermatology. Saunders Elsevier. ISBN0-7216-2921-0. Explicit use of et al. in: |author= (bantuan)CS1 maint: multiple names: authors list (link)