American National Standards Institute, American National Standards Institute, National Fire Protection Association (Estados Unidos), & National Fire Protection Association (Estados Unidos). (2008). NFPA 1031 (2009 edition.). Quincy, Mass.: National Fire Protection Association.
Citación estilo ChicagoAmerican National Standards Institute, American National Standards Institute, National Fire Protection Association (Estados Unidos), y National Fire Protection Association (Estados Unidos). NFPA 1031. 2009 edition. Quincy, Mass.: National Fire Protection Association, 2008.
Cita MLAAmerican National Standards Institute, American National Standards Institute, National Fire Protection Association (Estados Unidos), y National Fire Protection Association (Estados Unidos). NFPA 1031. 2009 edition. Quincy, Mass.: National Fire Protection Association, 2008.