Dyfyniad APA

Willer Helga, Yussefi Menzler Minou, Sorensen Neil, & International Federation of Organic Agriculture Movements. The world of organic agriculture.

Dyfyniad Arddull Chicago

Willer Helga, Yussefi Menzler Minou, Sorensen Neil, and International Federation of Organic Agriculture Movements. The World of Organic Agriculture.

Dyfyniad MLA

Willer Helga, et al. The World of Organic Agriculture.

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