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Blackwell Publishers, 1997
Buku Teks
Keesing, Roger M.
Holt, Rinehart and winston, 1975
Buku Teks
Aldine Publishing company, 1971
Buku Teks
Needham, Rodney, author
Tavistock Publications, 1974
Buku Teks
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UI - Laporan Penelitian