Many professional organizations and industry associations develop ethics standards and guidelines or offer tips; here is a selection:
Communication Management & Design
Marketing & Advertising
Public Relations
Online ebook (authenticate with Netpass)
Roy L Moore,
Advertising and public relations law (2nd ed. 2011). Contents: Chapter 1 The First Amendment; Chapter 2 The Development of the Commercial Speech Doctrine; Chapter 3 Public Interest Information as Commercial Speech; Chapter 4 Defamation, Product Disparagement and Related Torts; Chapter 5 Invasion of Privacy: False Light, Private Facts, Intrusion and Other Related Torts; Chapter 6 Invasion of Privacy: Misappropriation and Right of Publicity; Chapter 7 Copyright; Chapter 8 Patents and Trademarks; Chapter 9 Other Ways to Protect "Ideas"