edited by George Thomas Kurian, Graham T.T. Molitor
Macmillan Library Reference USA, 1996
Buku Referensi
Grolier Incorporated, 1991
Buku Referensi
Grolier, 1994
Buku Referensi
Warren Thomas Reich, editor in chief
Simon & Schuster Macmillan, 1995
Buku Referensi
Edgar F. Borgatta, editor-in-chief, Marie L. Borgatta, managing editor
Macmillan, 1992
Buku Referensi