edited by John Zumerchik
MacMillan Library Reference USA, 1997
Buku Referensi
William Bright, editor-in-chief
Oxford University Press, 1992
Buku Referensi
editor-in-chief, Trevor N. Dupuy, Franklin D. Margiotta, James B. Montley, David L. Bongard
Brassey's, 1993
Buku Referensi
editor Frank N. Magill
Toppan Company, 1996
Buku Referensi
editor, David L. Sills
Macmillan Co. & The Free Press, 1968
Buku Referensi