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Buku Teks
edited by Wendu Nuryanti
Gadjah Mada University Press, 1997
Buku Referensi
Hari Untoro Drajat, author
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 1991
UI - Disertasi (Membership)
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McGraw-Hill, 2005
Buku Teks
Muhlbauer, W. Kent., author
Gulf Publishing Company, 1992
Buku Referensi