2C. Edwin Baker. Human Liberty and Freedom of Speech[M]. Oxford University Press, 1989.25.
3Robert Bork. Neutral Principles and Some First Amendment Problems[J]. 47 Indiana L. J, 1971. 1, 29-30.
4Virginia State Bd. of Pharmacy v. Virginia Citizens Consumer Council, Inc., 425 U.S. 748, 96 S. Ct.1817, 48 L.Ed.2d 346(1976).
5Gerard Quinn. The Right of Lawyers to Advertise in the Market for Legal Services: a Comparative American, European and Irish Perspectives [J ]. Anglo-American Law Review,2000.
6Bolger v. Youngs Drug Products Corp. , 463U.S. 60, 103S. Ct.2875,77 L.Ed.2d 469(1983).
