People Quotes - Page 1053
Karl Marx, Friedrich Engels (1975). “Karl Marx, Frederick Engels: collected works”, Intl Pub
"The Constitution of Liberty". Book by Friedrich Hayek, Chap. 6 : Equality, Value and Merit, 1960.
Frida Kahlo (2006). “Frida by Frida: Selection of Letters and Texts”, Editorial Rm Rio Panuko