F. Valente, M. Otten, F. Balbina, R. Van de Weerdt, C. Chezzi, P. Eriki, . . . J.-M. Okwo Bele. Massive outbreak of poliomyelitis caused by type-3 wild poliovirus in Angola in 1999. The World Health Organization.
Chicago Style (17th ed.) CitationF. Valente, M. Otten, F. Balbina, R. Van de Weerdt, C. Chezzi, P. Eriki, J. Van-Dúnnen, and J.-M. Okwo Bele. Massive Outbreak of Poliomyelitis Caused by Type-3 Wild Poliovirus in Angola in 1999. The World Health Organization.
MLA (9th ed.) CitationF. Valente, et al. Massive Outbreak of Poliomyelitis Caused by Type-3 Wild Poliovirus in Angola in 1999. The World Health Organization.
Warning: These citations may not always be 100% accurate.