Henke, Lucy L. “Why Is It Okay to Deceive the Public: Should Public Relations Firms and Ad Agencies Be Required to Disclose the Sponsors of Astroturfing and Other Masked Persuasion Practices?”. Journal of Marketing Development and Competitiveness 12, no. 3 (October 1, 2018). Accessed January 18, 2025. https://mail.articlegateway.com/index.php/JMDC/article/view/62.