Não informado. (1969). Journal of systems management. Association for Systems Management.
Chicago-referens (17:e uppl.)Não informado. Journal of Systems Management. Cleveland, Ohio: Association for Systems Management, 1969.
MLA-referens (8:e uppl.)Não informado. Journal of Systems Management. Association for Systems Management, 1969.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.