Dyfyniad APA

(1999). Bioregional assessments: Science at the crossroads of management and policy. Washington, D.C: Island Press.

Dyfyniad Arddull Chicago

Bioregional Assessments: Science At the Crossroads of Management and Policy. Washington, D.C: Island Press, 1999.

Dyfyniad MLA

Bioregional Assessments: Science At the Crossroads of Management and Policy. Washington, D.C: Island Press, 1999.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.