1. On the supposed influence of offensive trades on mortality;Snow;Lancet,1856
2. University of California Los Angeles. Snow's testimony. Available at: http://www.ph.ucla.edu/epi/snow/snows_testimony.html. Accessed April 30, 2021.
3. Cholera: its prevention and its cure; or the philosophy of great epidemics,1850
4. The structure of scientific revolutions;Kuhn,2012