Cita APA (7a ed.)
Keller, P. (2011). Six Sigma: Demystified (2nd ed.). McGraw Hill.
Cita Chicago Style (17a ed.)
Keller, Paul. Six Sigma: Demystified. 2nd ed. New York: McGraw Hill, 2011.
Cita MLA (9a ed.)
Keller, Paul. Six Sigma: Demystified. 2nd ed. McGraw Hill, 2011.
Precaución: Estas citas no son 100% exactas.