APA (7th ed.) Zitazioa

Doobereiner, J. Nitrogen- fixing bacteria in nonleguminous crop plants.

Chicago Style (17th ed.) Zitazioa

Doobereiner, Johanna. Nitrogen- Fixing Bacteria in Nonleguminous Crop Plants.

MLA (9th ed.) Zitazioa

Doobereiner, Johanna. Nitrogen- Fixing Bacteria in Nonleguminous Crop Plants.