The bluebook a uniform system of citation has been the go to guide for generations of law students lawyers scholars judges and other legal professionals in a diverse and rapidly changing legal profession the bluebook continues to provide a systematic method by which members of the profession communicate important information to one another about the sources and legal authorities upon which they rely in their work order the 21st edition today. The bluebook a uniform system of citation is most often used in legal studies criminology and legal practice using any system of citation can be tricky if a class requires you to use the bluebook you will need to use the most recent publication the bluebook a uniform system of citation 19th edition the bluebook. The bluebook a uniform system of citation 2015 20th ed amber chisholm general rules blue pages first section of rules for practitioners organized as b1 b2 b3 etc the main white section is the rules in depth blue pages are meant for academics and practitioners and the white pages are for law review articles and research papers blue pages are mostly used in briefs motions . The layout of the bluebook has been updated to make the information easier to access some citation forms have been expanded elaborated upon or modified from previous editions to reflect the ever expanding range of authorities used in legal writing and to respond to suggestions from the legal community