National Fire Protection Association, American National Standards Institute, & American Gas Association. National fuel gas code. American Gas Association ; National Fire Protection Association.
Chicago Style (17th ed.) CitationNational Fire Protection Association, American National Standards Institute, and American Gas Association. National Fuel Gas Code. [Arlington, Va.] : Quincy, MA: American Gas Association ; National Fire Protection Association.
MLA (9th ed.) CitationNational Fire Protection Association, et al. National Fuel Gas Code. American Gas Association ; National Fire Protection Association.
Warning: These citations may not always be 100% accurate.