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John Wiley & Sons, 1999
Buku Teks
Allen, Edward, author
Wiley , 2014
Buku Teks
Soegijanto, author
Departemen Pendidikan dan Kebudayaan , 1999
Buku Teks
Frick, Heinz, author
Kanisius, 2001
Buku Teks
Sitanggang, Pieter Andreas Wesly
2014
UI - Skripsi (Membership)