Stannard, Harold, author
Adam and Charles Black, 1949
Buku Teks
Heringa, A.W., author
Metro, 2009
Buku Teks
Strong, C.F., author
Sidgwick & Jackson Limited, 1960
Buku Teks
Strong, C. F.
Sidgwick and Jackson, 1972
Buku Teks
edited by Eivind Smith
Kluwer Law International, 1995
Buku Teks