Shah, D. (2007). QA Manual (2nd.). Business Horizones.
Chicago Style aipamenaShah, D.H. QA Manual. 2nd. New Delhi: Business Horizones, 2007.
MLA aipamenaShah, D.H. QA Manual. 2nd. Business Horizones, 2007.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.