Não informado. (2004). Supply management. Chartered Institute of Purchasing and Supply.
Chicago-Zitierstil (17. Ausg.)Não informado. Supply Management. London: Chartered Institute of Purchasing and Supply, 2004.
MLA-Zitierstil (8. Ausg.)Não informado. Supply Management. Chartered Institute of Purchasing and Supply, 2004.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.