Packard, V. (1981). The hidden persuaders (Rev. ed.). Washington Square Press.
Lua i Stíl Chicago (17ú heag.)Packard, Vance. The Hidden Persuaders. Rev. ed. New York: Washington Square Press, 1981.
Lua MLA (8ú heag.)Packard, Vance. The Hidden Persuaders. Rev. ed. Washington Square Press, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.