The new Palgrave : a dictionary of economics; Volume 1, A to D
edited by John Eatwell, Murray Milgate and Peter Newman
Macmillan, 1988
 Buku Referensi
The New Oxford encyclopedic dictionary; Volume 2
Oxford University Press, 1991
 Buku Referensi
The new Palgrave : a dictionary of economics; Volume 3, K to P
edited by John Eatwell, Murray Milgate and Peter Newman
Macmillan, 1988
 Buku Referensi
The new Palgrave : a dictionary of economics; Volume 4, Q to Z
edted by John Eatell, Murray Milgate and Peter Newman
Macmillan, 1988
 Buku Referensi
THe New Lexicon Webster's Dictionary of the English Language Volume 2 (Encyclopedic Edition)
Danbury : Lexicon Publications, Inc., 2004,
 Buku Referensi