Plamenatz, John
Man and society: political and social theories from machiavelli to marx Voume II / John Plamenatz
Longman Press, 1992
 Buku Teks SO
Plamenatz, John
Man and society volume one & two / John Plamenatz
Longman Group Limited, 1963
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Carritt, E.F.
Morals and politics: theories of their relation from Hobbes and Spinoza to Marx and Bosanquet
Clarendon Press, 1935
 Buku Teks SO
Carritt, E.F.
Morals and politics: theories of their relation from Hobbes and Spinoza to Marx and Bosanquet
Clarendon Press, 1935
 Buku Teks SO
Germino, Dante L.
Modern Western political thought: Machiavelli to Marx
Rand McNally, 1972
 Buku Teks SO