Dyfyniad APA

Carter, M., & Gregorich, E. (2009). Soil Sampling and Methods of Analysis, Second Edition. CRC Press.

Dyfyniad Arddull Chicago

Carter, M.R., và E.G Gregorich. Soil Sampling and Methods of Analysis, Second Edition. CRC Press, 2009.

Dyfyniad MLA

Carter, M.R., và E.G Gregorich. Soil Sampling and Methods of Analysis, Second Edition. CRC Press, 2009.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.