Forrester, K. (2001). Subsurface drainage for slope stabilization. American Society of Civil Engineers. https://doi.org/10.1061/9780784400166
Chicago-referens (17:e uppl.)Forrester, Kevin. Subsurface Drainage for Slope Stabilization. Reston, Virginia: American Society of Civil Engineers, 2001. https://doi.org/10.1061/9780784400166.
MLA-referens (9:e uppl.)Forrester, Kevin. Subsurface Drainage for Slope Stabilization. American Society of Civil Engineers, 2001. https://doi.org/10.1061/9780784400166.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.