McIntosh, Jane
The practical archaelogist: how we know what we know about the past
Checkmark Books, 1999
 Buku Referensi
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
 eBooks
Harry Siswanto
What we must know about communism / by Harry and Bonaro Overstreet
Norton, 1958
 Buku Teks SO
Rethinking substance abuse : what the science shows, and what we should do about it
edited by William R. Miller, Kathleen M. Carroll
Guilford Press, 2006
 Buku Teks
Huntington, Samuel P.
Who are We?: America's great debate
Simon & Schuster, 2005
 Buku Teks