APA (7th ed.) Citation

Barker, E., & Plato. (1960). Greek political theory: Plato and his predecessors. Methuen.

Chicago Style (17th ed.) Citation

Barker, Ernest, and Plato. Greek Political Theory: Plato and His Predecessors. London: Methuen, 1960.

MLA (9th ed.) Citation

Barker, Ernest, and Plato. Greek Political Theory: Plato and His Predecessors. Methuen, 1960.