APA استشهاد

Carter, M., & Gregorich, E. (2008). Soil sampling and methods of analysis (2nd ed.). CRC.

استشهاد بنمط شيكاغو

Carter, M.R, و E.G Gregorich. Soil Sampling and Methods of Analysis. 2nd ed. Boca Raton: CRC, 2008.

MLA استشهاد

Carter, M.R, و E.G Gregorich. Soil Sampling and Methods of Analysis. 2nd ed. CRC, 2008.