APA-referens (7:e uppl.)
O'Brien, D. M. (2010). Congress shall make no law: The First Amendment, unprotected expression, and the Supreme Court. Rowman & Littlefield Publishers.
Chicago-referens (17:e uppl.)
O'Brien, David M. Congress Shall Make No Law: The First Amendment, Unprotected Expression, and the Supreme Court. Lanham, Md.: Rowman & Littlefield Publishers, 2010.
MLA-referens (9:e uppl.)
O'Brien, David M. Congress Shall Make No Law: The First Amendment, Unprotected Expression, and the Supreme Court. Rowman & Littlefield Publishers, 2010.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.