Bluebook Guide
An introduction to legal citation based on The Bluebook, 20th Edition (the style manual for citing to legal documents within the United States).
Source: Georgetown University Law Library
Citing Government Documents
Each citation style treats government documents differently, this gives an overview of the most common formats and sources of styles.
Source: Columbia University Library
Introduction to Basic Legal Citaiton
This work first appeared in 1993. It was most recently revised in November of 2020 to take account of a new edition of The Bluebook (the 21st).