Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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