Artikel Jurnal
Shahrul Hisam Zainal Ariffin, author
Universiti Kebangsaaan Malaysia, 2011
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Sardjoko, author
Gramedia, 1991
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F.G. (Florentinus Gregorius) Winarno, author
M-BRIO press, 2007
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Agustin Krisna Wardani, author
Universitas Brawijaya Press, 2017
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