Walker, V. (2001). Developments in the concept of a patentable invention in USA and Europe: Computer programs and methods of doing business. Schulthess.
Chicago-Zitierstil (17. Ausg.)Walker, Victor. Developments in the Concept of a Patentable Invention in USA and Europe: Computer Programs and Methods of Doing Business. Zürich: Schulthess, 2001.
MLA-Zitierstil (9. Ausg.)Walker, Victor. Developments in the Concept of a Patentable Invention in USA and Europe: Computer Programs and Methods of Doing Business. Schulthess, 2001.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.