The oxford English dictionary : being a corrected re-issue with an introduction, supplement, and bibliography of a new English dictionary on historical principles
The Clarendon Press, 1933
Buku Referensi
The New Oxford encyclopedic dictionary; Volume 1
Oxford University Press, 1991
Buku Referensi
THe New Lexicon Webster's Dictionary of the English Language Volume 1(Encyclopedic Edition)
Danbury : Lexicon Publications, Inc., 2004,
Buku Referensi
The New Oxford encyclopedic dictionary; Volume 3
Oxford University Press, 1991
Buku Referensi
The New Oxford encyclopedic dictionary; Volume 8
Oxford University Press, 1991
Buku Referensi