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Onkar Ghate, The Appeal of Ayn Rand, su Capitalism Magazine, 2 febbraio 2008. URL consultato il 22 aprile 2014 (archiviato dall'url originale il 22 aprile 2014).
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Burns, 2009, p. 4; Gladstein, 2009, pp. 107–108, 124 Jennifer Burns, Goddess of the Market: Ayn Rand and the American Right, New York, Oxford University Press, 2009, ISBN978-0195324877. Mimi Reisel Gladstein, Ayn Rand, Major Conservative and Libertarian Thinkers series, New York, Continuum, 2009, ISBN978-0-8264-4513-1, OCLC319595162.
Roderick T. Long, Reason and Value: Rand versus Aristotle, Objectivist Studies Monographs, Poughkeepsie, NY, The Objectivist Center, 2000, ISBN978-1-57724-045-7, OCLC49875339.
Gladstein, 2009, pp. 116–117; Burns, 2009, p. 297 Mimi Reisel Gladstein, Ayn Rand, Major Conservative and Libertarian Thinkers series, New York, Continuum, 2009, ISBN978-0-8264-4513-1, OCLC319595162. Jennifer Burns, Goddess of the Market: Ayn Rand and the American Right, New York, Oxford University Press, 2009, ISBN978-0195324877.