Artikel Jurnal
Lane, Jan-Erik, author
Ashgate, 2006
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Andrew Hurrell, Ngaire Woods, Satria Utama S., Diana Arimbi
Fakultas Ekonomi UI, 2001
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Hitt, Michael A., author
Thomson South-Western, 2003
Buku Teks
Hitt, Michael A., author
Thomson, South-Western, 2005
Buku Teks