APA aipamena

Journal of soil and water conservation. Ankeny, IA: Soil Conservation Society of America.

Chicago Style aipamena

Journal of Soil and Water Conservation. Ankeny, IA: Soil Conservation Society of America.

MLA aipamena

Journal of Soil and Water Conservation. Ankeny, IA: Soil Conservation Society of America.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.