Hinde, Robert A.
Bending the rules : the flexibility of absolutes in modern life
Oxford University Press, 2008
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Boss, Judith A.
Ethics for life: a text with readings
McGraw-Hill, 2004
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Kode etik penyelenggara negara dalam mewujudkan Good Governance
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Fuller, Lon L.
The morality of law
Yale University Press, 1974
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Fuller, Lon L.
The morality of law
Yale University Press, 1964
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