Kamstra, G. (2002). Patents on biotechnological inventions: The E.C. directive. Sweet & Maxwell.
Lua i Stíl Chicago (17ú heag.)Kamstra, Gerald. Patents on Biotechnological Inventions: The E.C. Directive. London: Sweet & Maxwell, 2002.
Lua MLA (9ú heag.)Kamstra, Gerald. Patents on Biotechnological Inventions: The E.C. Directive. Sweet & Maxwell, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.