National Fire Protection Association & National Fire Protection Association. Technical Committee on Hazardous Materials Response Personnel. (1997). NFPA 472, standard on professional competence of responders to hazardous materials incidents (1997 ed.). National Fire Protection Association,.
Cita Chicago Style (17a ed.)National Fire Protection Association y National Fire Protection Association. Technical Committee on Hazardous Materials Response Personnel. NFPA 472, Standard on Professional Competence of Responders to Hazardous Materials Incidents. 1997 ed. Quincy, Mass.: National Fire Protection Association,, 1997.
Cita MLA (8a ed.)National Fire Protection Association y National Fire Protection Association. Technical Committee on Hazardous Materials Response Personnel. NFPA 472, Standard on Professional Competence of Responders to Hazardous Materials Incidents. 1997 ed. National Fire Protection Association,, 1997.