Cita APA (7th ed.)

Childs, H. (1965). Public opinion: Nature formation & role. D.Van Nostrand.

Cita Chicago (17th ed.)

Childs, Harwood. Public Opinion: Nature Formation & Role. Princeton: D.Van Nostrand, 1965.

Cita MLA (9th ed.)

Childs, Harwood. Public Opinion: Nature Formation & Role. D.Van Nostrand, 1965.