(1989). Electrical equipment news. Southam Business Information and Communications Group.
Chicago-referens (17:e uppl.)Electrical Equipment News. [Don Mills, Ont.: Southam Business Information and Communications Group, 1989.
MLA-referens (8:e uppl.)Electrical Equipment News. Southam Business Information and Communications Group, 1989.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.