Remler, D.K. & Van Ryzin, G.G. (2010). (Chapter 13) Natural and quasi-experiments. Research methods in practice: Strategies for description and causation (pp. 427-464). Thousand Oaks, CA: Sage Publications. [discussion: Q1, Q2, Q3 ] [RVR Ch. 13 QUIZ]
CEP 900 & 930