Lane, R. E., & Sears, D. O. (1964). Public opinion. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Lane, Robert E., agus David O. Sears. Public Opinion. Eaglewood Cliffs [u.a.]: Prentice-Hall, 1964.
Lua MLA (8ú heag.)Lane, Robert E., agus David O. Sears. Public Opinion. Prentice-Hall, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.