APA (7e ed.) Bronvermelding

BENTLEY TREVOR J. (1980). PRACTICAL COST REDUCTION. MCGRAW-HILL.

Chicago (17e ed.) Bronvermelding

BENTLEY TREVOR J. PRACTICAL COST REDUCTION. NEW DELHI: MCGRAW-HILL, 1980.

MLA (9e ed.) Bronvermelding

BENTLEY TREVOR J. PRACTICAL COST REDUCTION. MCGRAW-HILL, 1980.