Schregle, Johannes
UP.Law Center, 1975
Buku Teks
Philip CF Chan, Asanga Gunawansa, Lim Chong Fong, Arthur Mclnnis
Lexis Nexis , 2009
Buku Teks
Jesus Felipe; Rana Hasan, editor
Palgrave Macmillan, 2006
Buku Teks
Leslie, Douglas L., author
West Publishing Company, 1979
Buku Teks
Gould, William B., IV, author
MIT Press, 1982
Buku Teks