For students needing supplemental reading to master legal English, these "classic" yet recently updated guides are highly recommended: Glanville Williams: Learning the Law

For students pursuing an LL.M. or participating in international moots (such as the Jessup or Vis Moot), advanced legal English is foundational to success.

Drafting and correspondence. Why it works: This classic textbook (often available as a sample PDF on university portals) breaks down every letter, email, and pleading. Look for the 5th edition (2023) or later.