Não informado. (1969). Data base. Association for Computing Machinery, Special Interest Group on Business Data Processing.
Chicago-referens (17:e uppl.)Não informado. Data Base. New York: Association for Computing Machinery, Special Interest Group on Business Data Processing, 1969.
MLA-referens (8:e uppl.)Não informado. Data Base. Association for Computing Machinery, Special Interest Group on Business Data Processing, 1969.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.