1972
Buku Teks
Embassy of the People's Republic of China, [date of publication not identified]
Buku Teks
Friedman, Lawrence M., 1930-
W.W. Norton, 1984
Buku Teks
Walker, Marianne McGettigan
American law Institute Publishers, 1995
Buku Teks
Hurst, James Willard
Little, Brown, 1950
Buku Teks