| The International Commitee of Public Relations and Consultancies | ICCO |
| Asociación de Empresas Consultoras en Relaciones Públicas y Comunicación | ACEDEC |
| Anuário dos Meios 2007 | Anuário da Publicidade & Comunicação |
| Anuário de Publicidade Briefing | Anuário de Publicidade Briefing |
| Hollis PR | Hollis PR |
| The Holmes Report | Holmes Report |
| International Association of Business Communicators | IABC |
| Institute of Public Relations | IPR |
| Internacional Public Relations Association | IPRA |
| Leading publisher of titles for those working in the public relations industry worldwide | PR Week |
| Public Relations Consultants Association | PRCA |
| The Public Relations Society of America | PRSA |
