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Macmillan Press, 1992
Buku Teks
Tjandra Yoga Aditama, author
2002
Artikel Jurnal
Nungki Anggorowati, author
Interna Publishing, 2017
Artikel Jurnal
Harris, William, author
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Buku Teks
Edited by Barry R. Bloom
Massachusetts Avenue, 1994
Buku Teks