Παραπομπή APA

Hawkins,Douglas M, & Olwell, D. H. (1998). Cumulative sum charts and charting for quality improvement. Springer.

Παραπομπή Chicago Style

Hawkins,Douglas M, και David H. Olwell. Cumulative Sum Charts and Charting for Quality Improvement. New York: Springer, 1998.

Παραπομπή MLA

Hawkins,Douglas M, και David H. Olwell. Cumulative Sum Charts and Charting for Quality Improvement. Springer, 1998.