Citation Management refers to a collection of many different tools designed to help researchers manage bibliographic information. The term citation management is also known as "citation software," "bibliographic management," or "reference management."
There are many tools available to the researcher. You will need to experiment with the many different tools to determine what will work best for you and your needs.
These tools update your sources for good law and verify whether you have copied the exact language of a quote in a document.
LexisNexis for Microsoft Office -- must download.
Shepard's Brief Check -- Upload a document.
WestCheck -- includes Quote Right quote checking and Keycite for updating the law.