CRACH,BILL. (1994). FIVE PILLERS OF TQM. Truman Talley Books publication.
Lua i Stíl Chicago (17ú heag.)CRACH,BILL. FIVE PILLERS OF TQM. New York: Truman Talley Books publication, 1994.
Lua MLA (9ú heag.)CRACH,BILL. FIVE PILLERS OF TQM. Truman Talley Books publication, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.