Harvey, Cameron, author
Carswell, 1993
Buku Teks
Gould, William B., IV, author
MIT Press, 1982
Buku Teks
Reuschlein, Harold Gill, author
St. Paul Minn, 1990
Buku Teks
Verhagen, H.L.E., author
Martinus Nijhoff, 1995
Buku Teks
Anson, William R., Sir, author
Oxford University Press, 1930
Buku Teks