एपीए उद्धरण

Kamstra, G. (2002). Patents on biotechnological inventions: The EC directive. Sweet & Maxwell.

शिकागो स्टाइल उद्धरण

Kamstra, Gerald...[et.al]. Patents on Biotechnological Inventions: The EC Directive. London: Sweet & Maxwell, 2002.

एमएलए उद्धरण

Kamstra, Gerald...[et.al]. Patents on Biotechnological Inventions: The EC Directive. Sweet & Maxwell, 2002.