Newsom, D., & Siegfried, T. (1981). Writing in public relations practice: Form & style. Wadsworth Pub. Co.
Lua i Stíl Chicago (17ú heag.)Newsom, Doug, agus Tom Siegfried. Writing in Public Relations Practice: Form & Style. Belmont, Calif: Wadsworth Pub. Co, 1981.
Lua MLA (9ú heag.)Newsom, Doug, agus Tom Siegfried. Writing in Public Relations Practice: Form & Style. Wadsworth Pub. Co, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.