ThurstonL, WilliamsG. An examination of John Fewster's role in the discovery of smallpox vaccination. J R Coll Physicians Edinb2015: 45: 173–9. http://dx.doi.org/10.4997/JRCPE.2015.217
2.
BoylstonAW. Defying Providence. Smallpox and the forgotten 18th century medical revolution. Create Space; 2012. p.220–1.
3.
Carrick MooreJ. The History and Practice of Vaccination. London: J. Callow, London; 1817. p.2.
4.
SmithJR. The Speckled Monster. Chelmsford: Essex Record Office; 1987.
5.
HoultonR. Indisputable Facts Relative to the Suttonian Art of Inoculation. 1768. Dublin: WG Jones; 1768. p.13–5.