Remler, D.K. & Van Ryzin, G.G. (2010). (Chapter 2) Theory and Models. Research methods in practice: Strategies for description and causation (pp. 25-54). Thousand Oaks, CA: Sage Publications. [RVR, Ch. 2 QUIZ]

[**OPTIONAL**] Derry, G. (1999). Chapter 6: A universe in a bottle: Models, modeling, and successive approximation. In What science is and how it works (pp. 69-88). Princeton, NJ: Princeton University Press.