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Buku Teks
Yayasan Proklamasi, [date of publication not identified]
Buku Teks
Kornblum, William, author
Wadsworth and Cengage Learning, 2012
Buku Teks
Kornblum, William, author
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Buku Teks
Blonna, Rochard, author
McGraw-Hill, 2012
Buku Teks