Παραπομπή APA

Carter, M. R., & Gregorich, E. G. (2008). Soil sampling and methods of analysis (2nd ed.). [s.l.]: Canadian Society of Soil Science.

Παραπομπή Chicago Style

Carter, Martin R., and E. G. Gregorich. Soil Sampling and Methods of Analysis. 2nd ed. [s.l.]: Canadian Society of Soil Science, 2008.

Παραπομπή MLA

Carter, Martin R., and E. G. Gregorich. Soil Sampling and Methods of Analysis. 2nd ed. [s.l.]: Canadian Society of Soil Science, 2008.

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