Institution, 8. B. S. Special requirements for cinematograph film designated as 'safety film'.
Chicago-referens (17:e uppl.)Institution, 8096 British Standards. Special Requirements for Cinematograph Film Designated as 'Safety Film'.
MLA-referens (9:e uppl.)Institution, 8096 British Standards. Special Requirements for Cinematograph Film Designated as 'Safety Film'.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.