APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (9. p.)

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