WIPO, 2007
Buku Teks
Arnaud Nuyts, editor
Kluwer Law International, 2008
Buku Teks SO
Congress of the U.S., Office of Technology Assessment, 1986
Buku Teks SO
McJohn, Stephen M., 1959-
Wolters Kluwers, 2015
Buku Teks
Bainbridge, David
Pearson - Longman, 2002
Buku Teks SO