APA

Yang K., El-Haik B. S., . (2009). Design for six sigma. New York: McGraw-Hill.

Chicago

Yang Kai, El-Haik Basem S, . 2009. Design for six sigma. New York: McGraw-Hill.

Harvard

Yang K., El-Haik B. S., . (2009). Design for six sigma. New York: McGraw-Hill.

MLA

Yang Kai, El-Haik Basem S, . Design for six sigma. New York: McGraw-Hill. 2009.