APA (7th ed.) Citation

Maurice John. (2001). Polio eradication: The last and toughest 1%. The World Health Organization.

Chicago Style (17th ed.) Citation

Maurice John. Polio Eradication: The Last and Toughest 1%. The World Health Organization, 2001.

MLA (9th ed.) Citation

Maurice John. Polio Eradication: The Last and Toughest 1%. The World Health Organization, 2001.

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