The Australian concise Oxford dictionary of current English
edited by George W. Turner
Melbourne, Oxford University Press, 1987
 Buku Referensi
The Pocket oxford-Duden German dictionary
Oxford : Oxford University Press, 1995,
 Buku Referensi
The oxford dictionary of current english
Oxford university press , 1992
 Buku Teks
The oxford dictionary of current english
edited by Della Thompson
Oxford University Press, 1996
 Buku Referensi
Fowler, H.W. [Henry Watson], 1858-1933
The Concise Oxford Dictionary of Current English
Clarendon, 1954
 Buku Teks