Bluebook

Legal writing is built on authority. Every legal argument-whether presented in a court brief, scholarly article, judicial opinion, or legal memorandum-must be supported by reliable sources of law. Legal citation is the standardized method used to identify and locate those sources. Through citations, legal professionals communicate where a rule of law originated, how it has been interpreted, and why it supports a particular legal argument.
A citation serves as more than a reference. It acts as a bridge between legal reasoning and the body of law that underlies it. Judges, attorneys, scholars, and students rely on citation systems to ensure that legal claims can be verified quickly and accurately. Without proper citations, legal arguments lose credibility, and the reliability of legal analysis becomes questionable.