1. William H. McNeill, Plagues and Peoples (Garden City, NY: Anchor Books, 1998), 267–268.
2. Charles Rosenberg, The Cholera Years: The United States in 1832, 1849, and 1866 (Chicago: University of Chicago Press, 1987).
3. Neville M. Goodman, International Health Organizations and Their Work (London: Churchill Livingstone, 1971), 34.
4. Sylvia Noble Tesh, Hidden Arguments: Political Ideology and Disease Prevention Policy (New Brunswick, NJ: Rutgers University Press, 1987), 12.
5. Norman Howard-Jones, The Scientific Background of the International Sanitary Conferences, 1851–1938 (Geneva: World Health Organization, 1975), 9–11.