Hutchins, G. (1994). ISO 9000. Viva books.
Lua i Stíl Chicago (17ú heag.)Hutchins, Greg. ISO 9000. New delhi: Viva books, 1994.
Lua MLA (9ú heag.)Hutchins, Greg. ISO 9000. Viva books, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.