Intellectual history
Galbraith, John Kenneth. The Affluent Society. Houghton Mifflin, 1958, ch. 2, sect. 1.
Shaw, George Bernard. Annajanska, the Bolshevik Empress. 21 Jan. 1918, Coliseum Theatre, London, England, UK.
Shaw, George Bernard. "Annajanska, the Bolshevik Empress." Selected Short Plays, edited by Dan H. Laurence. Penguin, 1988.
Arnold, Matthew. God and the Bible. London: Smith, Elder & Co., 1875.
Pater, Walter. "Pico Della Mirandola." Studies in the History of the Renaissance. London: Macmillan and Co., 1873.
Pater, Walter. "Pico Della Mirandola." Studies in the History of the Renaissance. Oxford University Press, 2010.
Bruner, Jerome. The Process of Education. Harvard University Press, 1960, introduction.