Final answer:
The 'blue book' commonly refers to Blackstone's Commentaries on the Laws of England, a fundamental text in the study of English common law.
Step-by-step explanation:
The name commonly referred to as the 'blue book' in a legal context is Blackstone's Commentaries on the Laws of England. This seminal work by Sir William Blackstone was the first comprehensive collection and analysis of English common law. Blackstone's Commentaries were written in an accessible style so that even those new to the study of law, like novice law students, could understand its contents. It remained a standard text in legal education until the late 19th century, shaping legal education and providing a foundation for the legal system in the United States as well.