The Second Amendment is divided into two clauses:
Rulings
Harper, T. (2016). The complete idiot's guide to the U.S. Constitution. Alpha Books, a member of Penguin Random House LLC.
Monk, L. R. & Ginsburg, R. B. (2018). The Bill of Rights: a user's guide. Hachette Books.
Monk, L. R. (2015). The words we live by: your annotated guide to the Constitution. Hachette Books.