Trích dẫn APA

Day, R. W. Soil testing manual: Procedures, classification data, and sampling practices /Robert W. Day. McGraw-Hill.

Trích dẫn kiểu Chicago

Day, Robert W. Soil Testing Manual: Procedures, Classification Data, and Sampling Practices /Robert W. Day. McGraw-Hill.

Trích dẫn MLA

Day, Robert W. Soil Testing Manual: Procedures, Classification Data, and Sampling Practices /Robert W. Day. McGraw-Hill.

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