Dyfyniad APA

Bleam, W. F. (2017). Soil and environmental chemistry (2nd ed.). Elsevier.

Dyfyniad Arddull Chicago

Bleam, William F. Soil and Environmental Chemistry. 2nd ed. Amsterdam: Elsevier, 2017.

Dyfyniad MLA

Bleam, William F. Soil and Environmental Chemistry. 2nd ed. Elsevier, 2017.

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