Friedman, Thomas L.
The world is flat : the globalized world in the twenty-first century
Penguin Book, 2006
 Buku Teks
Bruyn, Severyn T.
A Civil Economy: Transforming the Market in the Twenty-First Century
The University of Michigan Press, 2000
 Buku Teks
Leming, Michael R.
Understanding dying, death, and bereavement
Cengage Learning, 2016
 Buku Teks
Parental loss of a child
edited by Therese A. Rando
Research Press, 1986
 Buku Teks
Connerton, Paul
The spirit of mourning : history, memory and the body
Cambridge University Press, 2011
 Buku Teks