Secondary sources can help elucidate constitutional provisions. Many books, treatises, and periodicals have been written but the following are a few of the most well-know constitutional law secondary sources.
Encyclopedia of the American Constitution
by
Leonard W. Levy (Editor); Kenneth L. Karst (Editor)
American Constitutional Law
by
Laurence Tribe
Database and web resources on the U.S. Constitution.
Both the United States Code Annotated (catalog record) and the United States Code Service (catalog record) include annotated versions of the Constitution of the United States. These versions of the Constitution will contain the most current annotations of the sources listed in print.
The Constitution of the United States of America
by
U. S. Constitution, Analysis and Interpretation Staff; Senate Armed Service Committee (Produced by)