American National Standards Institute & American Society of Civil Engineers. (1994). Standard guidelines for the design of urban subsurface drainage: ANSI/ASCE 12-92, ANSI approved March 15, 1993, Standard guidelines for installation of urban subsurface drainage : ASCE 13-93, Standard of urban subsurface drainage : ASCE 14-93. ASCE.
Chicago-referens (17:e uppl.)American National Standards Institute och American Society of Civil Engineers. Standard Guidelines for the Design of Urban Subsurface Drainage: ANSI/ASCE 12-92, ANSI Approved March 15, 1993, Standard Guidelines for Installation of Urban Subsurface Drainage : ASCE 13-93, Standard of Urban Subsurface Drainage : ASCE 14-93. New York: ASCE, 1994.
MLA-referens (9:e uppl.)American National Standards Institute och American Society of Civil Engineers. Standard Guidelines for the Design of Urban Subsurface Drainage: ANSI/ASCE 12-92, ANSI Approved March 15, 1993, Standard Guidelines for Installation of Urban Subsurface Drainage : ASCE 13-93, Standard of Urban Subsurface Drainage : ASCE 14-93. ASCE, 1994.