APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.