Gaya APA

Hayler, R., Nichols, M, D. (2007). Six sigma for financial services : how leading companies are driving results using lean, six sigma, and process management (-). New York: McGraw-Hill.

Gaya MLA

Hayler, Rowland., Nichols, Michael, D. "Six sigma for financial services : how leading companies are driving results using lean, six sigma, and process management". - New York: McGraw-Hill, 2007. Text.