1. 204 Pa. Code sect. 303.11 (2005).
2. Tonry, Michael. 2004. U.S. sentencing systems fragmenting. In Panel reform in overcrowded times, ed. Michael Tonry, 21–28. New York: Oxford University Press.
3. Cal. Penal Code Sect. 1170(a)(1) (West 1985).
4. Model Penal Code Sect. 1.02(2) (Official Draft 1962).
5. American Law Institute, Model Penal Code Sect. 1.02(2) adopted May 24, 2017.