Não informado. (1981). Public Enterprise. International Center for Public Enterprise in Developing Countries.
Chicago-referens (17:e uppl.)Não informado. Public Enterprise. Belgrade: International Center for Public Enterprise in Developing Countries, 1981.
MLA-referens (8:e uppl.)Não informado. Public Enterprise. International Center for Public Enterprise in Developing Countries, 1981.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.