Dyfyniad APA

(2000). Soil samplingtechnical engineering and design guides as adapted from the US Army Corps of Engineers, No. 30. ASCE.

Dyfyniad Arddull Chicago

Soil Samplingtechnical Engineering and Design Guides as Adapted from the US Army Corps of Engineers, No. 30. ASCE, 2000.

Dyfyniad MLA

Soil Samplingtechnical Engineering and Design Guides as Adapted from the US Army Corps of Engineers, No. 30. ASCE, 2000.

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