APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

Warning: These citations may not always be 100% accurate.