Não informado. (2004). European Journal of Purchasing and Supply Management. Butterworth Heinemann.
Chicago (17e ed.) BronvermeldingNão informado. European Journal of Purchasing and Supply Management. Oxford, Inglaterra: Butterworth Heinemann, 2004.
MLA (8e ed.) BronvermeldingNão informado. European Journal of Purchasing and Supply Management. Butterworth Heinemann, 2004.
Let op: Deze citaties zijn niet altijd 100% accuraat.