Dyfyniad APA

Forrester, K. (2001). Subsurface drainage for slope stabilization. American Society of Civil Engineers. https://doi.org/10.1061/9780784400166

Dyfyniad Arddull Chicago

Forrester, Kevin. Subsurface Drainage for Slope Stabilization. Reston, Virginia: American Society of Civil Engineers, 2001. https://doi.org/10.1061/9780784400166.

Dyfyniad MLA

Forrester, Kevin. Subsurface Drainage for Slope Stabilization. American Society of Civil Engineers, 2001. https://doi.org/10.1061/9780784400166.

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