Wilcox, D. L. (1986). Public relations strategies and tactics. Harper and Row.
Lua i Stíl Chicago (17ú heag.)Wilcox, Dennis L. Public Relations Strategies and Tactics. Harper and Row, 1986.
Lua MLA (9ú heag.)Wilcox, Dennis L. Public Relations Strategies and Tactics. Harper and Row, 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.