APA-viite (7. p.)
Guerra-López, I. (2007). Evaluating impact: Evaluation and continual improvement for performance improvement practitioners. HDR Press.
Chicago-viite (17. p.)
Guerra-López, Ingrid. Evaluating Impact: Evaluation and Continual Improvement for Performance Improvement Practitioners. Amherst, Mass.: HDR Press, 2007.
MLA-viite (9. p.)
Guerra-López, Ingrid. Evaluating Impact: Evaluation and Continual Improvement for Performance Improvement Practitioners. HDR Press, 2007.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.