Marpaung, Leden, author
Sinar Grafika, 2004
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Sherlock, Stephen, author
Friedrich-Naumann-Stiftung fur die Freiheit, 2008
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Topo Santoso, author
Ind-Hill, 1997
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Neng Djubaedah, author
Kencana Prenada Media, 2009
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Burhan Bungin, author
Kencana, 2003
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