APA (7th ed.) Citation

Proudhon, P., & Vernon, R. (1979). The principle of federation. University of Toronto Press.

Chicago Style (17th ed.) Citation

Proudhon, P.-J., and Richard Vernon. The Principle of Federation. Toronto ; Buffalo: University of Toronto Press, 1979.

MLA (9th ed.) Citation

Proudhon, P.-J., and Richard Vernon. The Principle of Federation. University of Toronto Press, 1979.