New York United Nations 1964,
Buku Teks
Grove, Peter, author
Graham & Trotman, 1991
Buku Referensi
Cambridge University Press, 2018
eBooks
Bain, Keith, author
Harvester-Wheatsheaf, 1988
Buku Teks
Rio Gusti Nugraha, author
2017
UI - Tesis (Membership)