Sijthoff & Noordhoff , 1979
Buku Teks
Carey, John, author
Syracuse University Press , 1971
Buku Teks
American Bar Association, 1978
Buku Teks
edited by Helen Keller, Geir Ulfstein
Cambridge University Press, 2012
Buku Teks
Smith, Rhona K., author
Routledge, 2010
Buku Teks