Cita APA (7a ed.)

Hennessy, B. C. (1975). Public opinion (3rd ed.). Duxbury Press.

Cita Chicago Style (17a ed.)

Hennessy, Bernard C. Public Opinion. 3rd ed. Belmont: Duxbury Press, 1975.

Cita MLA (9a ed.)

Hennessy, Bernard C. Public Opinion. 3rd ed. Duxbury Press, 1975.