Law review articles are very useful secondary sources because they can help explain, analyze and interpret complex constitutional issues.
American Law Reports (Available on Lexis and Westlaw). Comprehensive summary and commentary on Sixth Amendment cases regarding the Right to Counsel that have come before the Supreme Court. Randy J. Sutton, Construction and Application of Sixth Amendment Right to Counsel—Supreme Court Cases, 33 A.L.R. Fed. 2d 1 (2009).
American Jurisprudence (Available on Lexis and Westlaw). Contains footnotes and references to selected cases, “Research References,” West Digest Key Numbers, and American Law Reports Annotations. 21A Am. Jur. 2d Criminal Law § 1135 (2013).
Corpus Juris Secundum (Available on Westlaw). Contains footnotes and references to somewhat more exhaustive cases than American Jurisprudence.,“Research References,” West Digest Key Numbers, and American Law Reports annotations. 22 C.J.S. Criminal Law § 339 (2013).