International encyclopedia of economics : volume two
editor, Frank N. Magill
Fitzroy Dearborn Publishers, 1997
 Buku Referensi
Encyclopedia of literature; Volume two
edited by Joseph T. Shipley
Philosophical Library, 1946
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Turner, CMEP
International encyclopedia of art
Facts on File, 1996
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International Encyclopedia of goverment and politics
"S.Chand ,
 Buku Teks
International book publishing : an encyclopedia
edited by Philip G. Altbach, Edith S. Hoshino
Fitzroy Dearborn, 1995
 Buku Referensi