References Ton (le bon ton)

hughes, kristine (1998). everyday life in regency , victorian england: 1811–1901. writer s digest books. 
murray, venetia (1998). high society: social history of regency period, 1788–1830. viking. 
margetson, stella (1971). regency london. new york: prawger publishers, inc. 
kloester, jennifer (2005). georgette heyer s regency world. london: william heinemann.