American Society of Civil Engineers & American National Standards Institute. (1994). Standard guidelines for the design of urban subsurface drainage: ANSI/ASCE 12-92 ; Standard guidelines for installation of urban subsurface drainage : ASCE 13-93 ; Standard guidelines for operation and maintenance of urban subsurface drainage : ASCE 14-93. American Society of Civil Engineers. https://doi.org/10.1061/9780872629967

American Society of Civil Engineers and American National Standards Institute. Standard Guidelines for the Design of Urban Subsurface Drainage: ANSI/ASCE 12-92 ; Standard Guidelines for Installation of Urban Subsurface Drainage : ASCE 13-93 ; Standard Guidelines for Operation and Maintenance of Urban Subsurface Drainage : ASCE 14-93. New York, New York: American Society of Civil Engineers, 1994. https://doi.org/10.1061/9780872629967.

American Society of Civil Engineers and American National Standards Institute. Standard Guidelines for the Design of Urban Subsurface Drainage: ANSI/ASCE 12-92 ; Standard Guidelines for Installation of Urban Subsurface Drainage : ASCE 13-93 ; Standard Guidelines for Operation and Maintenance of Urban Subsurface Drainage : ASCE 14-93. American Society of Civil Engineers, 1994. https://doi.org/10.1061/9780872629967.