Cita APA (7th ed.)

ECKES GEORGE. (2003). SIX SIGMA FOR EVERYONE. JOHN WILEY & SONS, INC.

Cita Chicago (17th ed.)

ECKES GEORGE. SIX SIGMA FOR EVERYONE. NEW JERSEY: JOHN WILEY & SONS, INC, 2003.

Cita MLA (9th ed.)

ECKES GEORGE. SIX SIGMA FOR EVERYONE. JOHN WILEY & SONS, INC, 2003.