Dyfyniad APA
ebrary, Inc, American Society of Civil Engineers, & Environmental and Water Resources Institute (U.S.). (2011). Guidelines for the physical security of water utilities, ANSI/ASCE/EWRI 56-10: Guidelines for the physical security of wastewater/stormwater utilities, ANSI/ASCE/EWRI 57-10. American Society of Civil Engineers.
Dyfyniad Arddull Chicago
ebrary, Inc, American Society of Civil Engineers, and Environmental and Water Resources Institute (U.S.). Guidelines for the Physical Security of Water Utilities, ANSI/ASCE/EWRI 56-10: Guidelines for the Physical Security of Wastewater/stormwater Utilities, ANSI/ASCE/EWRI 57-10. Reston, VA: American Society of Civil Engineers, 2011.
Dyfyniad MLA
ebrary, Inc, et al. Guidelines for the Physical Security of Water Utilities, ANSI/ASCE/EWRI 56-10: Guidelines for the Physical Security of Wastewater/stormwater Utilities, ANSI/ASCE/EWRI 57-10. American Society of Civil Engineers, 2011.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.