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Buku Referensi
Rocha, Luis Miguel
Gramedia Pustaka Utama, 2011
Buku Teks
Cross, Donna Woolfolk
Serambi Ilmu Semesta, 2007
Buku Teks
Wenley, A.G.
Smithsonian Institution, 1944
Buku Teks
Baines, Paul, 1961-
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Buku Teks