Koner, Pauline
Harwood Academic Publishers, 1998
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Kershaw, Baz
Routledge, 1992
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Muhammad Ridwan, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2013
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Overton, Bill
Macmillan Education, 1987
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Eco, Umberto, author
Indiana University Press, 1976
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