奥斯塔公国Giovanni Farrell-Vinay. "Welfare Provision in Piedmont", Health Care and Poor Relief in 18th- and 19th-century Southern Europe, Ole Peter Grell, Andrew Cunningham
美國免費診所 Smith, Noah. Free Clinics Ensure Care Throughout the Pandemic. Direct Relief. 2021-05-25 [2022-02-21]. (原始内容存档于2023-07-16) (美国英语). Kamimura, Akiko;