For legal documents, government documents, United Nations documents, international treaties, etc., consult The Bluebook: A Uniform System of Citation, located at Ask desk on the first floor.
Citations of sources from the library databases such as WestlawNext Campus Research should include the database name.
Examples for citing Constitutions
1. U.S. Const. art. I, § 4, cl. 2.
2. U.S. Consti. amend. XIV, § 2.
3. Ariz. Consti. art. VII, § 5.