Ooi, Vincent B.Y.
Edinburgh University Press, 1998
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Allan F. Lauder, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 2010
Artikel Jurnal
edited by Sylviane Granger, Magali Paquo
Oxford University press, 2012
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Ballard, Dana H., author
Prentice-Hall, 1982
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Sloman, Morris, author
Prentice-Hall, 1987
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