Spalding, K. J.
Basil Blackwell, 1931
Buku Teks
Barth, Lester George, author
Holt, Rinehart and Winston, 1966
Buku Teks
Lauterpacht, Hersch, Sir, 1897-1960
Stevens, 1958
Buku Teks
Beijing Wai Yan She (Foreign Language Teaching and Research Press) 2002
Buku Referensi
Berman, Abraham
Academic Press, 1979
Buku Teks