1. Unvaccinated COVID-19 Hospitalizations Cost Billions of Dollars. Peterson-KFF Website, Health System Tracker
2. COVID-19 Diagnostic Commons,2021
3. Executive Order on Ensuring Adequate COVID Safety Protocols for Federal Contractors;Biden,2021
4. Cost-Benefit Analysis: Concepts and Practice;Boardman,2018
5. Rehabilitating the Opportunity Cost of Capital in Cost-Benefit Analysis;Broughel,2021