LULLA SURESH. (1997). ISO 9000 + CQI = PROFIT. D L SHAH TRUST.
Chicago Style aipamenaLULLA SURESH. ISO 9000 + CQI = PROFIT. MUMBAI: D L SHAH TRUST, 1997.
MLA aipamenaLULLA SURESH. ISO 9000 + CQI = PROFIT. D L SHAH TRUST, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.