Heath, R. L. (2000). Handbook of public relations. Sage Publications.
Lua i Stíl Chicago (17ú heag.)Heath, Robert L. Handbook of Public Relations. Sage Publications, 2000.
Lua MLA (8ú heag.)Heath, Robert L. Handbook of Public Relations. Sage Publications, 2000.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.