Raphael, D. (1990). Problems of political philosophy: D.D. Raphael (David Daiches ) (2nd ed.). Macmillan.
Chicago-viite (17. p.)Raphael, D.D. Problems of Political Philosophy: D.D. Raphael (David Daiches ). 2nd ed. London: Macmillan, 1990.
MLA-viite (9. p.)Raphael, D.D. Problems of Political Philosophy: D.D. Raphael (David Daiches ). 2nd ed. Macmillan, 1990.
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