Cita APA (7th ed.)

Gallup, G. H. (1972). The Gallup Poll: Public opinion, 1935-1971. Random House.

Cita Chicago (17th ed.)

Gallup, George Horace. The Gallup Poll: Public Opinion, 1935-1971. New York: Random House, 1972.

Cita MLA (9th ed.)

Gallup, George Horace. The Gallup Poll: Public Opinion, 1935-1971. Random House, 1972.