Koh, Young Hun, author
Gramedia Pustaka Utama, 2011
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Eka Budianta, author
Atmochademas Persada, 2005.
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Artikel Jurnal
Trianda Florentina Hulu, author
Universitas Indonesia, 2017
UI - Skripsi (Membership)
Apsanti Djokosuyatno, author
Indonesiatera, 2004
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