APA aipamena

States), N. F. P. A. (. (1989). National Fire Protection Association 1989 directory. Quincy, MA : NFPA.

Chicago Style aipamena

States), National Fire Protection Association (United. National Fire Protection Association 1989 Directory. Quincy, MA : NFPA, 1989.

MLA aipamena

States), National Fire Protection Association (United. National Fire Protection Association 1989 Directory. Quincy, MA : NFPA, 1989.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.