Artikel Jurnal
Bozeman, Adda B.
Princeton University press, 1971
Buku Teks
Beard, Jennifer
Routledge, 2007
Buku Teks SO
general editor, Andrei Y. Vyshinsky; translated from the Russian by Hugh W. Babb. Introd. by John N. Hazard
Macmillan, 1954
Buku Teks
Kelsen, Hans
The Lawbook Exchange, 1993
Buku Teks SO