Nau, Henry R., 1941-
SAGE Publications, 2019
Buku Teks
Rourke, John T.
McGraw-Hill, 2010
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Kegley, Charles William, Jr.
St. Martin`s Press, 1997
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Andrew Hurrell, Ngaire Woods, Satria Utama S., Diana Arimbi
Fakultas Ekonomi UI, 2001
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Blackburn, Glenn
St. Martin's, 1985
Buku Teks