APA-referens (7:e uppl.)
Guerra-López, I. (2007). Evaluating impact: Evaluation and continual improvement for performance improvement practitioners. HDR Press.
Chicago-referens (17:e uppl.)
Guerra-López, Ingrid. Evaluating Impact: Evaluation and Continual Improvement for Performance Improvement Practitioners. Amherst, Mass.: HDR Press, 2007.
MLA-referens (9:e uppl.)
Guerra-López, Ingrid. Evaluating Impact: Evaluation and Continual Improvement for Performance Improvement Practitioners. HDR Press, 2007.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.