Besterfield, D. H. Total Quality Management (3rd.). Pearson.
Lua i Stíl Chicago (17ú heag.)Besterfield, Dale H. Total Quality Management. 3rd. Pearson.
Lua MLA (9ú heag.)Besterfield, Dale H. Total Quality Management. 3rd. Pearson.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.