1. H.Boyd Graham: “The Incidence of Rheumatic Infections in Victoria” The Medical Journal of AustraliaJune 19 1937 page944.
2. E.Britten Jones: “The Rheumatic Child” The Medical Journal of AustraliaSeptember 1 1934 page273.
3. Studies in the Epidemiology of Acute Rheumatic Fever and Related Diseases in the United States Based on Mortality Statistics;Atwater R. M.;The American Journal of Hygiene,1927
4. J. A.Glover: “Incidence of Rheumatic Diseases” The Lancet March 8 1930 page499.