GRANT, E. L., & LEAVENWORTH, R. S. (1996). Statistical quality control (Ed.7.). WCB McGraw-Hill.

GRANT, Eugene L., and Richard S. LEAVENWORTH. Statistical Quality Control. Ed.7. Boston: WCB McGraw-Hill, 1996.

GRANT, Eugene L., and Richard S. LEAVENWORTH. Statistical Quality Control. Ed.7. WCB McGraw-Hill, 1996.