Hazard & Hodes, The Law of Lawyering
May. 20 2015A Handbook on the Model Rules of Professional Conduct (2 vols., Prentice Hall Law & Business 1994 with supplement). A definitive work. Professor Hazard was a key member of the drafting team for the Model Rules. Professor Hodes is well respected in the ethics field as well, and is often seen on the ethics maillist.
