APA (7th ed.) Citation

Amsden, D. M., Butler, H. E., & Amsden, R. T. (1991). SPC simplified for services: Practical tools for continuous quality improvement. Quality Resources.

Chicago Style (17th ed.) Citation

Amsden, Davida M., Howard E. Butler, and Robert T. Amsden. SPC Simplified for Services: Practical Tools for Continuous Quality Improvement. New York: Quality Resources, 1991.

MLA (9th ed.) Citation

Amsden, Davida M., et al. SPC Simplified for Services: Practical Tools for Continuous Quality Improvement. Quality Resources, 1991.