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Basic Books, 1983
Buku Teks
Rachman, David J., author
Dryden Press, 1980
Buku Teks
Jefkins, Frank William, author
MacMillan Publishers, 1985
Buku Teks
Luciana, author
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UI - Tesis (Open)
Clow, Kenneth E., author
Pearson, 2016
Buku Teks