Ibn Khaldūn
Guy Debord
John Maynard Keynes
Matthew Desmond
Katherine Boo
Edward L. Glaeser
Arthur O'Sullivan
United States. General Accounting Office
Ivan Illich
Geoffrey West
Jane Jacobs
Alain Bertaud
Vaclav Smil
Donald C. Shoup
Dennis R. Judd
E. Barbara Phillips
J. John Palen