(2020). Poliovirus Outbreak Response Assessment (OBRA): Aide Mémoire Version 2. Geneva: World Health Organization.
Chicago Style CitationPoliovirus Outbreak Response Assessment (OBRA): Aide Mémoire Version 2. Geneva: World Health Organization, 2020.
MLA CitationPoliovirus Outbreak Response Assessment (OBRA): Aide Mémoire Version 2. Geneva: World Health Organization, 2020.
Warning: These citations may not always be 100% accurate.