APA (7e ed.) Bronvermelding

Não informado. (1974). Journal of Purchasing and Materials Management. National Association of Purchasing Management.

Chicago (17e ed.) Bronvermelding

Não informado. Journal of Purchasing and Materials Management. Oradell, NJ: National Association of Purchasing Management, 1974.

MLA (8e ed.) Bronvermelding

Não informado. Journal of Purchasing and Materials Management. National Association of Purchasing Management, 1974.

Let op: Deze citaties zijn niet altijd 100% accuraat.