APA (7e ed.) Bronvermelding

DOBLER DONALD W. (1984). PURCHASING AND MATERIALS MANAGEMENT: TEXT AND CASES (4.). TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED.

Chicago (17e ed.) Bronvermelding

DOBLER DONALD W. PURCHASING AND MATERIALS MANAGEMENT: TEXT AND CASES. 4. NEW DELHI: TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED, 1984.

MLA (9e ed.) Bronvermelding

DOBLER DONALD W. PURCHASING AND MATERIALS MANAGEMENT: TEXT AND CASES. 4. TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED, 1984.