edited by James Brown Scott
Oceana Publishing, 1964
Buku Teks
Hackworth, Green Haywood, author
Government Printing Office, 1943
Buku Teks
Kaplan, Morton A., author
John Wiley & Sons, 1961
Buku Teks
Kelsen, Hans, author
Holt, Rinehart and Winston, 1967
Buku Teks
O`Connell, D. P., author
Stevens & Sons Limited, 1970
Buku Teks