Berger, Curtis J.
Little,Brown and Company, 1975
Buku Teks
Garnaut, Ross
The World Bank, 2005
Buku Teks
Chandler, Adrian
Blackstone Press, 1993
Buku Teks
Buku Teks SO
edited by Georgy Kantor, Tom Lambert, and Hannah Skoda
Oxford University Press, 2017
Buku Teks SO