Dyfyniad APA

The International Forestry Review. Commonwealth Forestry Association.

Dyfyniad Arddull Chicago

The International Forestry Review. Commonwealth Forestry Association.

Dyfyniad MLA

The International Forestry Review. Commonwealth Forestry Association.

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