Scholarly Writing for Law Students: Seminar Papers, Law Review Notes, and Law Review Competition Papers, 4th ed.
by Elizabeth Fajans & Mary R. Falk
Call Number: Open Reserve KF 250 .F35 2011
Publication Date: 2011
Start with this book. Chapter 2 ("Inspiration: Choosing a Topic & Developing a Thesis") is filled with practical advice on identifying a subject you care about, narrowing your topic, and finding a promising thesis.
Academic Legal Writing: Law Review Articles, Student Notes, and Seminar Papers, and Getting on Law Review, 4th ed. (2010)
by Eugene Volokh
Call Number: Open Reserve KF 250 .V63 2010
See especially pages 10 to 39. There are excerpts of Academic Legal Writing available at Prof. Volokh's site, but you'll get more if you read (or at least skim) the whole book. The Book is also available from Thomson/West.
Law Students as Legal Scholars: An Essay/Review of Scholarly Writing for Law Students and Academic Legal Writing
by By Ruth Robson