APA aipamena

Troeh, F. R. (2005). Soils and soil fertility. Oxford: Blackwell.

Chicago Style aipamena

Troeh, Frederick R. Soils and Soil Fertility. Oxford: Blackwell, 2005.

MLA aipamena

Troeh, Frederick R. Soils and Soil Fertility. Oxford: Blackwell, 2005.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.