Томас Мальтус.An Essay on the Principle of Population by Thomas Malthus. Chapter 15 (неопр.) (1798). — «It should be observed that the principal argument of this Essay only goes to prove the necessity of a class of proprietors, and a class of labourers, but by no means infers that the present great inequality of property is either necessary or useful to society.» Дата обращения: 8 октября 2020. Архивировано 19 апреля 2021 года.
Томас Мальтус.An Essay on the Principle of Population by Thomas Malthus. Chapter 15 (неопр.) (1798). — «It should be observed that the principal argument of this Essay only goes to prove the necessity of a class of proprietors, and a class of labourers, but by no means infers that the present great inequality of property is either necessary or useful to society.» Дата обращения: 8 октября 2020. Архивировано 19 апреля 2021 года.