Cita APA (7th ed.)

Proudhon, P. J. (1979). The principle of federation. University of Toronto Press.

Cita Chicago (17th ed.)

Proudhon, Pierre Joseph. The Principle of Federation. Toronto: University of Toronto Press, 1979.

Cita MLA (9th ed.)

Proudhon, Pierre Joseph. The Principle of Federation. University of Toronto Press, 1979.