Cf. The Bluebook: A Uniform System of Citation (Columbia Law Review Ass’n et al. 20th ed. 2015) (demonstrating, by virtue of twenty editions, the have to have for these a program, but making a method that is extremely elaborate). Example: In the legal realm, there is a need to have for an simple-to-use, standard set of citation policies. Example: Most states have not enacted legislation requiring witnesses to report crimes to authorities.