American Society of Civil Engineers. (2013). Standard guidelines for the design, installation, and operation and maintenance of urban subsurface drainage: Three complete standards. American Society of Civil Engineers.
Dyfyniad Arddull ChicagoAmerican Society of Civil Engineers. Standard Guidelines for the Design, Installation, and Operation and Maintenance of Urban Subsurface Drainage: Three Complete Standards. Reston, Virginia: American Society of Civil Engineers, 2013.
Dyfyniad MLAAmerican Society of Civil Engineers. Standard Guidelines for the Design, Installation, and Operation and Maintenance of Urban Subsurface Drainage: Three Complete Standards. American Society of Civil Engineers, 2013.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.