editor-in-chief, John J. Marciniak
John Wiley & Sons, 1994
Buku Referensi
edited by Goerge Thomas Kurian, Graham T.T. Molitor
Macmillan Library Reference USA, 1996
Buku Referensi
Edgar F. Borgatta, editor-in-chief, Marie L. Borgatta, managing editor
Macmillan, 1992
Buku Referensi
Grolier Incorporated, 1991
Buku Referensi
Grolier, 1994
Buku Referensi