Cita APA (7th ed.)
Ritter, A. (1969). The political thought of Pierre-Joseph Proudhon. Princeton University Press.
Cita Chicago (17th ed.)
Ritter, Alan. The Political Thought of Pierre-Joseph Proudhon. Princeton, New Jersey: Princeton University Press, 1969.
Cita MLA (9th ed.)
Ritter, Alan. The Political Thought of Pierre-Joseph Proudhon. Princeton University Press, 1969.
Atenció: Aquestes cites poden no estar 100% correctes.