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,.
Παραπομπή σε μορφή Chicago (17η εκδ.)National Fire Protection Association και 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.
Παραπομπή σε μορφή MLA (8th εκδ.)National Fire Protection Association και 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.