Denise Beach. (2015). National Fuel Gas Code Handbook (9th ed.). America: National Fire Protection Association.
Chicago Style CitationDenise Beach. National Fuel Gas Code Handbook. 9th ed. America: National Fire Protection Association, 2015.
MLA CitationDenise Beach. National Fuel Gas Code Handbook. 9th ed. America: National Fire Protection Association, 2015.
Warning: These citations may not always be 100% accurate.