APA aipamena

(2005). Soil fertility and fertilizers. New Jersey: Pearson Prentice Hall.

Chicago Style aipamena

Soil Fertility and Fertilizers. New Jersey: Pearson Prentice Hall, 2005.

MLA aipamena

Soil Fertility and Fertilizers. New Jersey: Pearson Prentice Hall, 2005.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.