एपीए उद्धरण

Brouwer, F., & Crabtree, B. (1999). Environmental indicators and agricultural policy. CABI Publishing.

शिकागो स्टाइल उद्धरण

Brouwer, Floor, और Bob Crabtree. Environmental Indicators and Agricultural Policy. New York: CABI Publishing, 1999.

एमएलए उद्धरण

Brouwer, Floor, और Bob Crabtree. Environmental Indicators and Agricultural Policy. CABI Publishing, 1999.