Besterfield, D. H. Total Quality Management (3rd.). Pearson.
Chicago-čujuhus (17. p.)Besterfield, Dale H. Total Quality Management. 3rd. Pearson.
MLA-čujuhus (9. p.)Besterfield, Dale H. Total Quality Management. 3rd. Pearson.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.