Não informado. (2004). Supply management. Chartered Institute of Purchasing and Supply.
Chicago-referens (17:e uppl.)Não informado. Supply Management. London: Chartered Institute of Purchasing and Supply, 2004.
MLA-referens (8:e uppl.)Não informado. Supply Management. Chartered Institute of Purchasing and Supply, 2004.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.