BESTERFIELD, D. H. (2001). Quality Control / Dale H. Besterfield (ada cd). Prentrice Hall.
Lua i Stíl Chicago (17ú heag.)BESTERFIELD, Dale H. Quality Control / Dale H. Besterfield (ada Cd). Prentrice Hall, 2001.
Lua MLA (8ú heag.)BESTERFIELD, Dale H. Quality Control / Dale H. Besterfield (ada Cd). Prentrice Hall, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.