APA aipamena

Ulrich,B. (1991). Soil Acidity. springer.

Chicago Style aipamena

Ulrich,B. Soil Acidity. new york: springer, 1991.

MLA aipamena

Ulrich,B. Soil Acidity. springer, 1991.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.