Asean National Secreatriat
Asean National Secretariat. Department of Foreign Affairs Republic of Indonesia, [date of publication not identified]
Buku Referensi
World Health Organization
World Health Organization, 1976
Buku Teks
Jan Klabbers.
Cambridge University Press, 2016
Buku Teks
Mayer, J.P., author
Faber and Faber, 1948
Buku Teks
edited by Ian Brownlie, Guy S. Goodwin-Gill
Clarendon Press, 1971
Buku Teks