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Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2011
UI - Tesis Open
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McGraw-Hill Irwin, 2002
Buku Teks
Swayne, Linda E., author
Prentice-Hall International, 1989
Buku Teks
Dunn, Charles, author
Macmillan, 1971
Buku Teks
Berg, Thomas L., author
Anchor Books, 1971
Buku Teks