Julie Heintz-Cho, Tom Cobb & Mary A. Hotchkiss, Washington Legal Research (2d ed. 2009).
Daniel Small & Robin Page West, Letters for Litigators: Essential Communications for Opposing Counsel, Witnesses, Clients, and Others (2004).
Thomas E. Kane, Letters for Lawyers: Essential Communications for Clients, Prospects, and Others (2d ed. 2004).