[Gibbs, B. (1976). Freedom and Liberation, London: Chatto and Windus.]Search in Google Scholar
[von Hayek, F. A. (1960). The Constitution of Liberty, London: Routledge and Kegan Paul.]Search in Google Scholar
[Mill, J. S. (1999). On Liberty, available at: http://www.bartleby.com/130/.]Search in Google Scholar
[von Mizes, L. (2008). Choveshkoto deystvie, Sofia: Izd. Kashta MaK.]Search in Google Scholar
[Prodanov, V. (2011). Legitimatsiya na prehoda kam vtoriya balgarski kapitakizam. Ideologicheski mitove, Novo Vreme, broi 12.]Search in Google Scholar
[Rahn, R. W. (2011), Thoughts on liberty, The Washington Times.]Search in Google Scholar
