Sexton, John
How free are we? : what the constitution says we can and cannot do
M. Evans and Company, 1986
 Buku Teks
Hollis, Christopher
Can parliament survive?
Hollis & Carter, 1949
 Buku Teks
Proximore, Senator William
Can Small business survive ?
Henry Regnery, 1964
 Buku Teks
Albright, Madeleine
Memo to the president: how we can restore America's reputation and leadership
Harper Perenial, 2008
 Buku Teks
Rabe, Cynthia Barton
The innovation killer: how what we know limits what we can imagine-- and what smart companies are doing about it
American Management Association, 2006
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