1. U.S. Centers for Medicare and Medicaid Services. “The Provider Reimbursement Manual.” Updated May 4, 2012, www.cms.gov/Regulations-and-Guidance/Guidance/Manuals/Paper-Based-Manuals.html.
2. U.S. Environmental Protection Agency, “Federal Implementation Plans: Interstate Transport of Fine Particulate Matter and Ozone and Correction of SIP Approvals,” 76 Fed. Reg. 48208 (August 8 2011).
3. Philosophy, The Federalist, and the Constitution
4. A Realistic Theory of Law