The oxford-duden pictorial Chinese and English dictionary
Oxford University Press, 1998
Buku Referensi
The Oxford-Duden pictorial Chinese and English dictionary
New York Oxford University Press 1998,
Buku Referensi
The Oxford-duden pictorial French and english dictionary
Clarendon Press, 1996
Buku Referensi
Concise Oxford duden German dictionary English-German, German-English
Oxford , Clarendon Press
Buku Referensi
The Oxford-duden German dictionary
Clarendon Press, 1990
Buku Referensi