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ISBN 0-9631172-1-1. "CDC Yellow Fever". Diakses tanggal 2010-03-13. Oldstone, Michael B. A. (2000). Viruses, Plagues, and History (edisi ke-1st). Oxford...5 KB (514 kata) - 10 Maret 2024 12.02
tanggal 2021-11-13. Oldstone 2009, hlm. 135. Dobson 2008, hlm. 145. Oldstone 2009, hlm. 137–138. Oldstone 2009, hlm. 136–137. Oldstone 2009, hlm. 156–158...155 KB (17.494 kata) - 11 Maret 2024 04.23
