Watts, Brad R. “Understanding Opportunity Costs and the Economist’s View: A Response to Scriven’s ‘The Economist’s Fallacy’”. Journal of MultiDisciplinary Evaluation 5, no. 10 (July 30, 2008): 89–92. Accessed May 2, 2026. https://jmde.journals.publicknowledgeproject.org/index.php/jmde_1/article/view/194.