American Psychological Association
Gifford, Jon ( 2002 ). 2000 Outstanding Intellectuals of the 21st Century ( 00 ed. ). International Biographical Centre.
Modern Language Association
Gifford, Jon. 2000 Outstanding Intellectuals of the 21st Century . International Biographical Centre. 2002
Chicago Citation
Gifford, Jon. 2000 Outstanding Intellectuals of the 21st Century . 00 .England
: International Biographical Centre, 2002.
American Medical Association
Gifford, Jon. 2000 Outstanding Intellectuals of the 21st Century . International Biographical Centre; 2002.