Jaffe, Jerome H., editor in chief
MacMillan Library Reference USA, 1995
Buku Referensi
editor in chief, Robert J. Sternberg
Macmillan, 1994
Buku Referensi
edited by Mel Schwartz
John Wiley & Sons, 2002
Buku Referensi
Walter A. Elwell, general editor
Baker Book House, 1995
Buku Referensi
edited by Mary Hawkesworth, Maurice Kogan
Routledge, 1992
Buku Referensi