Anderfelt, Ulf, author
Martinus Nijhoff, 1971
Buku Teks
Okolie, Charles Chukwuma, author
Frederick A. Praeger, 1975
Buku Teks
Rothstein, Robert L., author
Columbia University Press, 1977
Buku Teks
Ray, Anandarup
S.L The World Bank 1987,
Buku Teks
International Legal Center, 1977
Buku Teks