ECKES GEORGE. (2003). SIX SIGMA FOR EVERYONE. JOHN WILEY & SONS, INC.
Chicagoスタイル(17版)引用形式ECKES GEORGE. SIX SIGMA FOR EVERYONE. NEW JERSEY: JOHN WILEY & SONS, INC, 2003.
MLA(9版)引用形式ECKES GEORGE. SIX SIGMA FOR EVERYONE. JOHN WILEY & SONS, INC, 2003.
警告: この引用は必ずしも正確ではありません.