APA (7th ed.) Citation

Rousseau, J. (1968). The social contract. Penguin Books.

Chicago Style (17th ed.) Citation

Rousseau, Jean-Jacques. The Social Contract. Harmondworth, Middlesex, England ; New York: Penguin Books, 1968.

MLA (9th ed.) Citation

Rousseau, Jean-Jacques. The Social Contract. Penguin Books, 1968.