APA aipamena

(2013). Improving crop productivity in sustainable agriculture. Weinheim: Wiley-Blackwell.

Chicago Style aipamena

Improving Crop Productivity in Sustainable Agriculture. Weinheim: Wiley-Blackwell, 2013.

MLA aipamena

Improving Crop Productivity in Sustainable Agriculture. Weinheim: Wiley-Blackwell, 2013.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.