APA aipamena

Norman W Hudson. (1993). FAO soils bulletin N.68: Field measurement of soil erosion and runoff. Rome: FAO.

Chicago Style aipamena

Norman W Hudson. FAO Soils Bulletin N.68: Field Measurement of Soil Erosion and Runoff. Rome: FAO, 1993.

MLA aipamena

Norman W Hudson. FAO Soils Bulletin N.68: Field Measurement of Soil Erosion and Runoff. Rome: FAO, 1993.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.