Citazione Stile APA (7a Edizione)

GUPTA PRAVEEN. (2004). SIX SIGMA BUSINESS SCORECARD. MCGRAW-HILL.

Citazione stile Chigago Style (17a edizione)

GUPTA PRAVEEN. SIX SIGMA BUSINESS SCORECARD. NEW YORK: MCGRAW-HILL, 2004.

Citatione MLA (9a ed.)

GUPTA PRAVEEN. SIX SIGMA BUSINESS SCORECARD. MCGRAW-HILL, 2004.