APA (7th ed.) Citation

Osama Ahmed Hassan, Clas Ahlm, Rosemary Sang, & Magnus Evander. (2011). The 2007 Rift Valley fever outbreak in Sudan. Public Library of Science (PLoS).

Chicago Style (17th ed.) Citation

Osama Ahmed Hassan, Clas Ahlm, Rosemary Sang, and Magnus Evander. The 2007 Rift Valley Fever Outbreak in Sudan. Public Library of Science (PLoS), 2011.

MLA (9th ed.) Citation

Osama Ahmed Hassan, et al. The 2007 Rift Valley Fever Outbreak in Sudan. Public Library of Science (PLoS), 2011.

Warning: These citations may not always be 100% accurate.