Leathley, Christian
Kluwer, 2007
Buku Teks
M. Mossadeq Bahri
Lembaga Penelitian Universitas Indonesia, 2004
Artikel Jurnal
Forsythe, David P., 1941-
Cambridge University Press, 2000
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Forsythe, David P., 1941-
Cambridge University Press, 2012
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McBeth, Adam
Oxford Univ Press, 2011
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