Não informado. Publications Newsletter. Control Data Corporation, Publications and Graphics Division.
Chicago-referens (17:e uppl.)Não informado. Publications Newsletter. Saint Paul, Minn: Control Data Corporation, Publications and Graphics Division.
MLA-referens (8:e uppl.)Não informado. Publications Newsletter. Control Data Corporation, Publications and Graphics Division.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.