Cita APA (7a ed.)

Gupta, P. (2004). Six sigma business scorecard. McGraw-Hill.

Cita Chicago Style (17a ed.)

Gupta, Praveen. Six Sigma Business Scorecard. McGraw-Hill, 2004.

Cita MLA (8a ed.)

Gupta, Praveen. Six Sigma Business Scorecard. McGraw-Hill, 2004.