Jakarata Sinar Grafika 2000,
Buku Referensi
Sitompul, S.M., author
Gadjah Mada University Press , 1995
Buku Teks
Triharso, author
Gadjah Mada University Press, 1994
Buku Teks
Nonon Saribanon Rubyawan, author
1996
UI - Tesis (Membership)
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