"A citator is a research tool that lists later sources that have cited earlier sources. The source you have located and plan to rely on is the 'cited source,' and it, in turn, is cited in a variety of subseuent 'citing sources.' ...The two major online legal citators are KeyCite (on WestLaw) and Shephard's (on LEXIS)." The Process of legal research, 5th edition, p. 145
These are some resources the Law Library has in print.
Shepard's Acts and Cases by Popular Names, Federal and State. Colorado Springs: Shepard's Inc.
(Law KF80 .S5 2010)
Covers through current year, updated with supplements. Gives citations to U.S. Code and Statutes at Large as well as some state sources.
Shepard's Idaho Citations.5th ed. 1995.
(Law KFI59 .S5 1995)
Covers cases and statutes includes citations to Idaho Reports and Pacific Reporter. Cases, v. 1, Statutes v.2
Shepard's Pacific Reporter Case Names Citator. [All cases appearing in the Pacific Reporter 1883-1993.] 1st ed. 1994.
(Law KF135 .P22 S529)
Shepard's Pacific Report Citations: A Compilation of Citations to All Cases Reported in the Pacific Reports. [Every State and Federal Citation 1P+]
(Law KF135 .P22 S53 1994)
Supplements: 1994-1996, 1996-1998
Shepard's United States Citations: Cases.
(Law KF78 .S55)
Covers through 1982; 1-448 U.S. to U.S. Supreme Court Cases
Shepard's United States Citations. Statutes.
(Law KF78 .S56)
Covers through 1979.