BENTLEY TREVOR J. (1980). PRACTICAL COST REDUCTION. MCGRAW-HILL.
Chicago-čujuhus (17. p.)BENTLEY TREVOR J. PRACTICAL COST REDUCTION. NEW DELHI: MCGRAW-HILL, 1980.
MLA-čujuhus (9. p.)BENTLEY TREVOR J. PRACTICAL COST REDUCTION. MCGRAW-HILL, 1980.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.