Kellner, Douglas
Oxford Polity Press 1989,
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Braunschweig Westermann 1995
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Robinson, Philip, author
Rajawali, 1986
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Russell, Bertrand, 1872-1970, author
London George Allen & Unwin 1947
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Umar Junus, author
Kuala Lumpur Dewan Bahasa dan Pustaka 1986
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