Proudhon, P. (1996). System of economical contradictions: Or, the philosophy of misery. University of Virginia Library.
Chicago-Zitierstil (17. Ausg.)Proudhon, Pierre-Joseph. System of Economical Contradictions: Or, the Philosophy of Misery. Charlottesville, Va: University of Virginia Library, 1996.
MLA-Zitierstil (8. Ausg.)Proudhon, Pierre-Joseph. System of Economical Contradictions: Or, the Philosophy of Misery. University of Virginia Library, 1996.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.