States), N. F. P. A. (. (1989). National Fire Protection Association 1989 directory. Quincy, MA : NFPA.
Chicago-referens (17:e uppl.)States), National Fire Protection Association (United. National Fire Protection Association 1989 Directory. Quincy, MA : NFPA, 1989.
MLA-referens (9:e uppl.)States), National Fire Protection Association (United. National Fire Protection Association 1989 Directory. Quincy, MA : NFPA, 1989.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.