Dyfyniad APA

Wurtenberger, G. (2006). European community plant variety protection. Oxford University press.

Dyfyniad Arddull Chicago

Wurtenberger, Gert....[et.al]. European Community Plant Variety Protection. Oxford: Oxford University press, 2006.

Dyfyniad MLA

Wurtenberger, Gert....[et.al]. European Community Plant Variety Protection. Oxford University press, 2006.

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