Kamstra, G. (2002). Patents on biotechnological inventions: The E.C. directive. Sweet & Maxwell.
Chicago Style aipamenaKamstra, Gerald. Patents on Biotechnological Inventions: The E.C. Directive. London: Sweet & Maxwell, 2002.
MLA aipamenaKamstra, Gerald. Patents on Biotechnological Inventions: The E.C. Directive. Sweet & Maxwell, 2002.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.