Gaya APA
Hennessy, Bernard C. (1968).
Public opinion .
Belmont:
Wadsworth.
Gaya Chicago
Hennessy, Bernard C.
Public opinion.
Belmont:
Wadsworth,
1968.
Text.
Gaya MLA
Hennessy, Bernard C.
Public opinion.
Belmont:
Wadsworth,
1968.
Text.
Gaya Turabian
Hennessy, Bernard C.
Public opinion.
Belmont:
Wadsworth,
1968.
Print.