Pagel, J.F.
Dream science : exploring the forms of consciousness
Academic Press, 2014
 eBooks
Sexton, John
How free are we? : what the constitution says we can and cannot do
M. Evans and Company, 1986
 Buku Teks
Young, Dennis
How shall we collect the garbage? : a study in economic organization / Dennis Young
The Urban Institute , 1972
 Buku Teks
Albright, Madeleine
Memo to the president: how we can restore America's reputation and leadership
Harper Perenial, 2008
 Buku Teks
Baruss, Imants
Alterations of consciousness: An empirical analysis for social scientists / Imants Baruss
American Psychological Association, 2003
 Buku Teks