Dyfyniad APA

(2001). Applying ecological principles to land management. Springer.

Dyfyniad Arddull Chicago

Applying Ecological Principles to Land Management. New York: Springer, 2001.

Dyfyniad MLA

Applying Ecological Principles to Land Management. Springer, 2001.

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