Dyfyniad APA

Keenan, R. (2014). Costa Rica: Lessons from 30 years of forest and environmental policy.

Dyfyniad Arddull Chicago

Keenan, Rod. Costa Rica: Lessons From 30 Years of Forest and Environmental Policy. 2014.

Dyfyniad MLA

Keenan, Rod. Costa Rica: Lessons From 30 Years of Forest and Environmental Policy. 2014.

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